WEBVTT 00:00:00.500 --> 00:00:05.600 They say an Englishman's home is his castle, and this is mine. 00:00:05.630 --> 00:00:09.160 Some say it's a bit on the big side for one person, 00:00:09.190 --> 00:00:12.160 but, well, it's somewhere to lay my head. 00:00:12.190 --> 00:00:15.730 Yes, I'm just a regular guy living in a standard gaff, leading 00:00:15.760 --> 00:00:20.650 an ordinary existence and struggling to answer all of life's big questions. 00:00:20.680 --> 00:00:23.840 Like, why can't I feed the dog while relaxing in the garden? 00:00:24.990 --> 00:00:28.160 Is it possible for me to make the bed without leaving my bath? 00:00:29.510 --> 00:00:33.880 And why can't I cook my sausages while writing my memoirs? 00:00:33.910 --> 00:00:37.760 I'm sure there are neat but dreary digital solutions available, 00:00:37.790 --> 00:00:42.090 but who wants to do this when you can do this? 00:00:48.490 --> 00:00:49.460 It's just better. 00:00:50.540 --> 00:00:53.020 So I'm holding a knockout tournament... 00:00:53.050 --> 00:00:54.660 This already feels dangerous. 00:00:54.690 --> 00:00:56.990 ...where teams of amateur engineers... 00:00:58.100 --> 00:01:02.580 ...will compete to perform my ordinary chores in extraordinary ways. 00:01:02.610 --> 00:01:04.430 Love it when a plan comes together. 00:01:04.460 --> 00:01:06.300 With chain reaction machines. 00:01:08.410 --> 00:01:12.020 Crazy contraptions made famous by viral videos 00:01:12.050 --> 00:01:15.740 that involve linking up everyday objects to magical effect. 00:01:19.580 --> 00:01:23.630 Chain reaction guru Zach Umperovitch is the fearsome judge. 00:01:23.660 --> 00:01:26.070 That one better work perfectly the first time. 00:01:26.100 --> 00:01:27.550 Oh, you stupid thing. 00:01:29.230 --> 00:01:33.630 Dr Shini Somara will reveal the science inside the machines. 00:01:35.180 --> 00:01:39.560 And at the end of it all, one team will be crowned chain reaction champion. 00:01:50.300 --> 00:01:52.510 We all have a morning routine. 00:01:55.820 --> 00:01:59.200 Regular as clockwork. Mine starts here. 00:01:59.230 --> 00:02:03.180 Once business has been concluded, my mind turns to my morning cuppa. 00:02:05.660 --> 00:02:11.030 But waiting for the kettle is completely intolerable, which got me thinking. 00:02:12.100 --> 00:02:14.590 Is it possible to build a machine that would allow 00:02:14.620 --> 00:02:17.990 those of us with a perfectly synced body clock to boil the kettle 00:02:18.020 --> 00:02:21.180 in the kitchen whilst going about our morning ablutions? 00:02:23.490 --> 00:02:25.750 Do you mind? I'm in here for a reason. 00:02:28.540 --> 00:02:31.870 Hopefully up for the job are my rival teams. 00:02:31.900 --> 00:02:34.510 In red, final years civil engineering students. 00:02:34.540 --> 00:02:37.390 And in blue, three stars of social media. 00:02:37.420 --> 00:02:40.150 Arriving at one of my many outbuildings. 00:02:40.180 --> 00:02:43.150 I may be eccentric, but I'm not completely mad. 00:02:43.180 --> 00:02:45.790 I'm not letting the teams run riot in my house. 00:02:49.620 --> 00:02:51.870 Oh God. I'm gonna scream every time. 00:02:51.900 --> 00:02:54.390 Tape measures. Do it by eye, man. 00:02:54.420 --> 00:02:57.030 I provided each team with a workshop. 00:02:57.060 --> 00:02:58.830 What could possibly go wrong? 00:02:58.860 --> 00:03:03.390 Along with identical rooms, just like mine, to make their machines in. 00:03:03.420 --> 00:03:05.110 They've got three days. 00:03:05.140 --> 00:03:08.670 On day one, they need to start on the toilet and cross the bathroom. 00:03:08.700 --> 00:03:12.280 Then on day two, they need to traverse my hallway. 00:03:12.310 --> 00:03:15.830 And on day three, they need to build across the kitchen 00:03:15.860 --> 00:03:18.150 and boil the kettle. 00:03:18.180 --> 00:03:21.030 We have to start on the toilet. Everyone starts on the toilet. 00:03:21.060 --> 00:03:22.230 We'll start with the toilet. 00:03:23.700 --> 00:03:27.360 Basics thankfully grasped, the teams are underway. 00:03:27.390 --> 00:03:29.080 We're using that, using that, using this. 00:03:29.110 --> 00:03:31.000 Which is everything we found in the room. 00:03:31.030 --> 00:03:33.510 Hoping to impress our expert judge. 00:03:36.060 --> 00:03:40.670 Zach Umperovitch is a two time chain reaction record holder and creator 00:03:40.700 --> 00:03:43.310 of some of the world's most ambitious machines. 00:03:43.340 --> 00:03:47.360 I just love chain reaction machines, the absurd, cartoonish nature of them. 00:03:47.390 --> 00:03:51.030 They're started by human touch, but then each individual object 00:03:51.060 --> 00:03:54.190 triggers one after the other until the task is solved. 00:03:54.220 --> 00:03:57.670 Some of my machines take weeks, even months, to build, 00:03:57.700 --> 00:04:01.080 but we've asked our teams to build them in just three days. 00:04:01.110 --> 00:04:02.800 Oh, that's scary. 00:04:02.830 --> 00:04:07.110 My first brew while I poo contenders are Team Civilised. 00:04:10.140 --> 00:04:13.080 Virtue, Chienyem and Esther. 00:04:13.110 --> 00:04:17.640 Three final year civil engineering students from Southampton University. 00:04:19.500 --> 00:04:20.550 There you go. 00:04:20.580 --> 00:04:24.440 I would say that Virtue likes to take a lead on things, 00:04:24.470 --> 00:04:26.360 but Chienyem always has the final say. 00:04:26.390 --> 00:04:30.310 Like if something not working...no, it's true. 00:04:30.340 --> 00:04:32.750 It's true. Chienyem has the final say. 00:04:32.780 --> 00:04:37.240 And me personally, I'm just there to make sure everything is running smoothly. 00:04:37.270 --> 00:04:40.830 You don't see a lot of female civil engineers or like black female civil engineers. 00:04:40.860 --> 00:04:43.190 I was thinking this would be great for representation. 00:04:43.220 --> 00:04:46.640 But if we don't win, that also doesn't represent all black people. 00:04:46.670 --> 00:04:48.720 Black civil engineers can win too. 00:04:48.750 --> 00:04:51.680 Yeah, yeah, yeah. All the good parts count. 00:04:53.060 --> 00:04:58.040 The duck's going to fly in the air and it can land somewhere, but it has to cause something. 00:04:58.070 --> 00:04:59.320 Yeah, I know, I know. 00:04:59.350 --> 00:05:00.470 And that's the thing. 00:05:00.500 --> 00:05:03.720 As Team Civilised decide what to hit with a duck... 00:05:03.750 --> 00:05:06.190 We're going to have a chute of some description. 00:05:06.220 --> 00:05:09.040 ...their rivals are discussing a detailed plan. 00:05:10.220 --> 00:05:13.680 And then we've got an A-frame. Drawn up by Baz. 00:05:13.710 --> 00:05:17.650 I forgot to mention he's got hands on them holding a plunger and a toilet brush. 00:05:17.680 --> 00:05:20.000 I feel more confident after watching you draw that. 00:05:20.030 --> 00:05:24.880 Social mediocrity are Tik Tok stars josh aka Joshua Cubed. 00:05:24.910 --> 00:05:27.440 The content I create is very much about solving puzzles. 00:05:27.470 --> 00:05:29.800 It's about trying to make people laugh. 00:05:29.830 --> 00:05:31.650 Take me. Occasionally I'll put on a wig. 00:05:31.680 --> 00:05:34.190 Mike aka Dad Dancer. 00:05:34.220 --> 00:05:37.910 My main content is just things I think are funny and hope that 00:05:37.940 --> 00:05:39.650 other people think is funny. 00:05:39.680 --> 00:05:42.910 And Baz aka My Petrol Emotion. 00:05:42.940 --> 00:05:44.290 I make transition videos. 00:05:44.320 --> 00:05:47.400 It's where you magically switch outfits to another outfit 00:05:47.430 --> 00:05:49.730 by the process of video editing. 00:05:49.760 --> 00:05:52.520 They've got over 3,000,000 followers between them. 00:05:52.550 --> 00:05:53.730 Hello, everyone. 00:05:53.760 --> 00:05:56.600 And despite only meeting for the first time while recording 00:05:56.630 --> 00:06:00.520 a new podcast, think they've got the perfect spread of talent. 00:06:00.550 --> 00:06:03.600 Muscle, brains, unnecessary flamboyance. 00:06:03.630 --> 00:06:06.800 I've got a tendency to overcomplicate stuff, so I think 00:06:06.830 --> 00:06:09.160 someone's gonna... Sounds perfect for this. 00:06:09.190 --> 00:06:12.040 Throw in three people into a room putting pressure 00:06:12.070 --> 00:06:14.370 on of trying to make a machine. 00:06:14.400 --> 00:06:17.160 It'll make great telly if we do. Yeah. Great telly. 00:06:19.190 --> 00:06:20.910 Team Social Mediocrity. Good morning. 00:06:20.940 --> 00:06:23.760 Good morning. Welcome. Thank you. 00:06:23.790 --> 00:06:28.450 The name. ls there a bit of false modesty there because you're all social media stars? 00:06:28.480 --> 00:06:30.668 Social media these clays means that bang average 00:06:30.692 --> 00:06:32.880 people like us can get decent followings. 00:06:32.910 --> 00:06:35.240 That's pretty much where we are and what we do. 00:06:35.270 --> 00:06:37.880 So do you naturally gravitate towards a style of build? 00:06:37.910 --> 00:06:40.240 Are we talking flamboyant, big, small, technical? 00:06:40.270 --> 00:06:43.280 Well, we've got somebody who likes to plan things 00:06:43.310 --> 00:06:45.331 to the nth degree and then a dad 00:06:45.355 --> 00:06:47.680 builder who just plugs things together. 00:06:47.710 --> 00:06:49.560 I'm trying to add toys and games in. 00:06:49.590 --> 00:06:52.960 I'm trying to find ways to throw in cards and fun things I like. 00:06:52.990 --> 00:06:55.370 There's a potential clash there, but it'll work, I'm sure. 00:06:55.400 --> 00:06:57.600 Yeah, he sounds totally convincing. 00:06:59.560 --> 00:07:02.010 Baz's detailed plan is to flush 00:07:02.040 --> 00:07:06.560 the toilet and use the water to tip a seesaw that pulls on a rope 00:07:06.590 --> 00:07:10.040 that via a pulley releases a bath bomb down a pipe. 00:07:10.070 --> 00:07:12.388 This hits a fishing net, setting off three 00:07:12.412 --> 00:07:14.730 pendulums swinging from a towel rail. 00:07:14.760 --> 00:07:17.730 For now, that's as far as their imagination stretches. 00:07:18.840 --> 00:07:20.090 I think it's too flimsy. 00:07:20.120 --> 00:07:22.450 You can build strength into anything. 00:07:22.480 --> 00:07:24.810 You asked me. I think it's too flimsy. 00:07:24.840 --> 00:07:28.530 Yeah. It appears these new friends are having their first tiff. 00:07:28.560 --> 00:07:31.680 I don't know why... Can you just tell me what's wrong with this? 00:07:31.710 --> 00:07:35.200 Baz designed the towel rail to be supported by a sturdy A-frame. 00:07:35.230 --> 00:07:37.803 I think it's nice to not necessarily build an entire 00:07:37.827 --> 00:07:40.400 A—frame, but instead build just the base of the A—frame. 00:07:40.430 --> 00:07:42.970 But josh and Mike think it's overcomplicated. 00:07:43.000 --> 00:07:46.690 There doesn't need to be a gap between there. Is that what we're doing then? 00:07:46.720 --> 00:07:49.690 Let's slowly back away. THEY CONTINUE DISCUSSIONS 00:07:49.720 --> 00:07:52.840 You know, when we figure this out, it's going to look so cool. 00:07:52.870 --> 00:07:56.450 No tiffs with Team Civilised who all agree that the flying duck 00:07:56.480 --> 00:07:58.170 should hit a tower of loo rolls. 00:07:58.200 --> 00:08:01.200 Everyone's scared of this mousetrap. It's not that scary. Argh! 00:08:02.360 --> 00:08:04.200 Team Civilised. Hey. 00:08:04.230 --> 00:08:07.610 So it helps that you guys know each other outside of this world? 00:08:07.640 --> 00:08:08.730 Yeah, it does. 00:08:08.760 --> 00:08:11.970 That we know each other's personalities and what to do, 00:08:12.000 --> 00:08:14.480 when to keep pushing, when to stop pushing. 00:08:14.510 --> 00:08:17.560 What's going to be different about a civil engineers approach 00:08:17.590 --> 00:08:19.890 to this problem to anybody else's? 00:08:19.920 --> 00:08:22.770 I think civil engineers, we think large scale because we deal 00:08:22.800 --> 00:08:25.480 with really big structures like bridges, dams and all of that. 00:08:25.510 --> 00:08:27.840 So I think we can see the bigger picture. 00:08:27.870 --> 00:08:31.450 Are you going to build a massive suspension bridge in my bathroom? 00:08:31.480 --> 00:08:34.330 We wish. No, we're not doing that. 00:08:34.360 --> 00:08:38.200 What they are doing is turning a toilet roll to start a ball run 00:08:38.230 --> 00:08:40.970 that will trigger the rat trap to fling the rubber duck 00:08:41.000 --> 00:08:44.450 at the toilet roll tower, sending one down some guttering. 00:08:44.480 --> 00:08:46.810 And that's as far as they've got. 00:08:48.390 --> 00:08:51.330 Oh, gosh. I think if this works, Virtue'll be very happy. 00:08:51.360 --> 00:08:55.170 Virtue wants to thoroughly test the toughest job, ensuring the duck 00:08:55.200 --> 00:08:56.490 hits the toilet rolls. 00:08:56.520 --> 00:08:58.360 Wait, wait, wait. OK, let me pay attention. 00:09:00.480 --> 00:09:04.050 As predicted, Chienyem and Virtue having their... 00:09:04.080 --> 00:09:08.100 We have slightly different thinking styles on how to do things. 00:09:08.130 --> 00:09:10.000 Virtue likes start to finish. 00:09:10.030 --> 00:09:12.770 I can think of elements anywhere. We want sequence. 00:09:12.800 --> 00:09:15.890 It needs to flow from zone one, two, three. 00:09:15.920 --> 00:09:18.138 OK, I want four rather than...like it 00:09:18.162 --> 00:09:20.380 needs to flow in chronological order 00:09:20.410 --> 00:09:24.360 and we need to build it in that order as well because then it starts getting stressy. 00:09:24.390 --> 00:09:26.720 Perhaps their rivals are getting on better. 00:09:26.750 --> 00:09:28.360 You're finding arguments when there aren't any. 00:09:28.390 --> 00:09:29.720 We're not arguing with you. 00:09:29.750 --> 00:09:31.330 Oh, no, it's got worse. 00:09:31.360 --> 00:09:32.930 Ready? 00:09:32.960 --> 00:09:34.970 Team Civilised are finding the chaotic world 00:09:35.000 --> 00:09:37.690 of chain reaction machines... Do we have a protractor? 00:09:37.720 --> 00:09:40.820 ...isn't sitting well with their finely tuned scientific minds. 00:09:43.130 --> 00:09:45.820 And the end of day test run is getting closer. 00:09:45.850 --> 00:09:48.900 Let's try it one more time. See if it acts the same way. 00:09:52.490 --> 00:09:53.900 Oh, that was so low. 00:09:55.520 --> 00:09:57.360 Teams. Teams. 00:09:57.390 --> 00:10:00.210 You probably are wearing watches, but in case you're too busy 00:10:00.240 --> 00:10:03.970 to look at them, you have now spent two hours in the bathroom. 00:10:04.000 --> 00:10:05.460 Two hours? Nice. 00:10:05.490 --> 00:10:08.210 You might want to get that checked out. 00:10:08.240 --> 00:10:10.540 OK. Carry on. I just like interrupting. 00:10:10.570 --> 00:10:11.900 It's a thing I enjoy. 00:10:13.040 --> 00:10:17.370 Thankfully, Baz has agreed to a towel rail compromise. 00:10:17.400 --> 00:10:19.410 Mike's bracing it for strength. 00:10:19.440 --> 00:10:23.330 So much more solid now. Without needing an ugly frame. 00:10:23.360 --> 00:10:27.900 That's good. See. Perfect. Going well. Going well. 00:10:27.930 --> 00:10:31.620 Well done, Joshua. We just had lunch now, so everyone's happier. 00:10:31.650 --> 00:10:35.290 I don't know if people get hangry or not, but we're OK. 00:10:36.880 --> 00:10:38.130 And isn't this cute? 00:10:38.160 --> 00:10:40.130 They're bonding by sharing the construction 00:10:40.154 --> 00:10:42.620 of a bath bomb pulley release system. 00:10:42.650 --> 00:10:47.340 So I'm trying to find a way to make sure that this little pulley is going to go on here. 00:10:47.370 --> 00:10:49.260 Josh is giving it flair. 00:10:49.290 --> 00:10:54.010 What that will do, that will lift up this soap, which is bizarre, and hopefully 00:10:54.040 --> 00:10:56.770 release a bath bomb down a pipe. 00:10:56.800 --> 00:11:01.570 While Baz has built a seesaw that tips when it fills with toilet water. 00:11:01.600 --> 00:11:03.290 I think that was incredibly reliable, too. 00:11:03.320 --> 00:11:05.700 That has got to happen every time. 00:11:05.730 --> 00:11:06.850 Lovely. 00:11:06.880 --> 00:11:10.460 Zach, both these teams just arrived and have got stuck in. 00:11:10.490 --> 00:11:12.130 They are building straight away. 00:11:12.160 --> 00:11:13.260 Absolutely. 00:11:13.290 --> 00:11:15.780 Team Civilised already has a bunch of different elements 00:11:15.810 --> 00:11:17.620 that they're starting to test. 00:11:17.650 --> 00:11:21.010 That being said, I think a lot of them are risky and that ball 00:11:21.040 --> 00:11:24.340 that has to fall has to hit a rat trap that's not mounted 00:11:24.370 --> 00:11:28.980 and they want it to have a little duck fly through the air to knock over the roll. 00:11:29.010 --> 00:11:30.570 The duck's a very uneven shape. 00:11:30.600 --> 00:11:33.340 Its trajectory is not easily predictable, is it? 00:11:33.370 --> 00:11:35.700 And then team Social Mediocrity. 00:11:35.730 --> 00:11:38.260 I'd like to see something working versus just them 00:11:38.290 --> 00:11:40.980 building, building, building and not making those links. 00:11:42.240 --> 00:11:43.930 Three hours have passed. 00:11:45.450 --> 00:11:46.650 What was even that? 00:11:47.730 --> 00:11:50.420 Social Mediocrity's machine doesn't have an end. 00:11:50.450 --> 00:11:52.820 There's a lot of things to connect in this game. 00:11:52.850 --> 00:11:54.650 And the start has issues too. 00:11:54.680 --> 00:11:57.166 This is exciting. Uh-oh. That's not 00:11:57.190 --> 00:11:58.010 watertight. Oh, no. 00:11:58.040 --> 00:11:59.638 You know, when we said what could 00:11:59.662 --> 00:12:00.860 possibly go wrong? Yeah, this. 00:12:02.680 --> 00:12:04.930 But hold the front page. 00:12:04.960 --> 00:12:06.820 I hate this rat trap, man. 00:12:06.850 --> 00:12:10.150 We're changing the rat trap because it's too unreliable. 00:12:10.170 --> 00:12:14.190 So we're moving on. To bigger and better things. 00:12:14.220 --> 00:12:15.750 Yeah, what she said. 00:12:15.780 --> 00:12:19.700 The falling ball will now hit a gate latch, releasing a bungee 00:12:19.720 --> 00:12:23.060 that flings some washing on a pulley towards the toilet roll tower. 00:12:24.540 --> 00:12:27.190 It's still like a rat trap, but this is more reliable. 00:12:27.220 --> 00:12:29.870 Once this thing hits the flap, it let's go. 00:12:29.900 --> 00:12:33.470 She takes the clothes with it and then releases the toilet paper. 00:12:33.500 --> 00:12:35.060 Yeah, that's what I'd have done. 00:12:36.090 --> 00:12:38.420 Teams! 00:12:38.450 --> 00:12:40.700 You have four hours. 00:12:40.720 --> 00:12:44.340 Four hours. just four. Carry on. 00:12:44.370 --> 00:12:45.340 Don't mind me. 00:12:46.420 --> 00:12:48.190 My lavatory. 00:12:48.220 --> 00:12:49.630 There's always gonna be water. 00:12:49.660 --> 00:12:51.910 Look, the emergency plumbers arrived. 00:12:54.180 --> 00:12:55.160 Science. 00:12:57.550 --> 00:13:00.030 I literally nearly drowned. Yeah, I won't call him again. 00:13:01.970 --> 00:13:05.420 Having completed job number one, fix their leaky loo. 00:13:05.450 --> 00:13:09.310 Social Mediocrity are feeling the strain with number two, 00:13:09.340 --> 00:13:13.060 deciding how much flushed water is needed to gently tip the seesaw. 00:13:14.500 --> 00:13:17.390 Where's the water? We had so much more the first three times. 00:13:17.420 --> 00:13:19.830 Just with that flush, you have to do it twice. 00:13:19.850 --> 00:13:21.390 Double flush agreed. 00:13:21.420 --> 00:13:23.188 That is far more water. They're 00:13:23.212 --> 00:13:24.060 moving on. There you go. 00:13:24.090 --> 00:13:26.268 It lifts up the soap on a rope. 00:13:26.292 --> 00:13:28.470 Soap on a rope. So that bit works. 00:13:28.500 --> 00:13:31.630 And joining the seesaw to the towel rail pendulum. 00:13:34.850 --> 00:13:37.160 An hour until test runs. Brilliant. 00:13:37.180 --> 00:13:40.470 Chienyem's struggling with her final domino stage. 00:13:40.500 --> 00:13:42.320 I hate this thing already. 00:13:43.500 --> 00:13:44.750 Why was I hopeful? 00:13:45.980 --> 00:13:48.880 And Mike's unleashing his bodging skills. 00:13:48.910 --> 00:13:51.880 Joshua. Woah. Hey! 00:13:51.910 --> 00:13:54.110 To give his machine an end. 00:13:58.220 --> 00:14:01.040 Teams, if I might bring your attention to the matter of time. 00:14:01.060 --> 00:14:02.350 You have two minutes left. 00:14:02.380 --> 00:14:05.040 Two minutes to see what you can do or not. 00:14:06.660 --> 00:14:09.070 Right. Change of plan on this as well. 00:14:09.100 --> 00:14:13.040 With their machine untested, cracks are starting to show again. 00:14:13.060 --> 00:14:14.790 But the machine still works. I guarantee. 00:14:14.810 --> 00:14:17.960 I think...| think what he just did. Guarantee, it's happened twice. 00:14:17.980 --> 00:14:19.710 Well, it is the toilet. 00:14:19.730 --> 00:14:22.160 Just ten seconds and the truth will be out there. 00:14:22.180 --> 00:14:26.600 We want to see what you can do in sorry, it's only five, four. 00:14:26.630 --> 00:14:30.630 It's four, three. It's only three, two, one, set, no time at all. 00:14:30.660 --> 00:14:34.430 It's all gone. Put your tools down. Step away. No more building. 00:14:34.460 --> 00:14:37.880 Get your machine set for your first test run of stage one 00:14:37.910 --> 00:14:40.600 of your kettle boiling chain reaction machine, please. 00:14:41.710 --> 00:14:45.350 I think I kept that calm for them. Important to ease them into that. 00:14:45.380 --> 00:14:47.350 It's good work. 00:14:47.380 --> 00:14:50.040 First to test are Team Civilised. 00:14:50.060 --> 00:14:54.480 They want their toilet roll to release a ball which hits a latch, 00:14:54.510 --> 00:14:57.910 releasing bungee cord propelled washing towards a toilet roll 00:14:57.930 --> 00:15:01.200 pyramid that topples bathroom inspired dominoes. 00:15:02.230 --> 00:15:03.600 Team Civilised. 00:15:03.630 --> 00:15:05.880 You've done a lot of testing today. 00:15:05.910 --> 00:15:07.600 Along every step, we've tested. 00:15:07.630 --> 00:15:09.560 So you're feeling confident? 00:15:09.590 --> 00:15:12.320 Yes, yeah, yeah. 00:15:12.350 --> 00:15:14.320 Hopefully it works, but... 00:15:14.350 --> 00:15:16.840 All right. Well, we hope it works. We really do. 00:15:16.860 --> 00:15:20.400 We all do. In your own time then, team. Start your machine. 00:15:20.430 --> 00:15:21.880 Let's see what it can do. 00:15:37.540 --> 00:15:39.890 Are we through? We're through. Well done. They made it. 00:15:41.460 --> 00:15:43.710 A first time clean run, all the way through. 00:15:46.060 --> 00:15:53.920 Their testing paid off with latch system, washing line and dominoes all working perfectly. 00:15:53.940 --> 00:15:55.920 I was so happy. We spent so long. 00:15:55.940 --> 00:15:58.600 We had tested so many times. It was supposed to work. 00:15:58.630 --> 00:16:02.000 There wasn't any reason for it to fail, but you never know. 00:16:02.030 --> 00:16:04.790 A tough act to follow for Social Mediocrity 00:16:04.810 --> 00:16:08.360 who want the flushing toilet to trigger the soap on a rope causing 00:16:08.390 --> 00:16:10.628 a bath bomb to knock the triple pendulum 00:16:10.652 --> 00:16:12.890 and topple the toilet roll dominoes. 00:16:12.920 --> 00:16:15.200 Team Social Mediocrity. 00:16:15.230 --> 00:16:18.890 You arrived here today and you built it but what I didn't see you do 00:16:18.920 --> 00:16:20.945 a lot of was testing. I think that came 00:16:20.969 --> 00:16:24.560 out of overconfidence really, didn't it? 00:16:24.590 --> 00:16:27.280 Zach. They used a great amount of everyday objects. 00:16:27.310 --> 00:16:30.430 They definitely needed more testing. Let's see if they sink or float. 00:16:30.460 --> 00:16:32.840 OK, well, we'll see if it pans out. 00:16:34.510 --> 00:16:37.440 Right, team. Well, in your own time, moment of truth, let's see 00:16:37.470 --> 00:16:39.530 if your confidence was justified. 00:16:39.560 --> 00:16:43.890 Start stage one of your kettle boiling chain reaction machine, please. 00:16:47.590 --> 00:16:49.120 Oh, I see. Oh. 00:16:50.430 --> 00:16:52.920 That's a proper chain reaction. That's a good start. 00:16:54.990 --> 00:16:56.800 Clever starting with a chain. 00:17:02.390 --> 00:17:04.610 Oh, well...well done. 00:17:06.720 --> 00:17:08.360 Guys, that is amazing. 00:17:11.070 --> 00:17:14.770 Their bathroom machine worked perfectly on its first full run through. 00:17:15.920 --> 00:17:18.560 Essentially, I think our confidence was justified. 00:17:18.590 --> 00:17:20.970 They seem to have a lot more technical power. 00:17:20.990 --> 00:17:24.880 They can build these really cool contraptions, which it'll take us way longer to try do that. 00:17:24.910 --> 00:17:26.800 I didn't look at anything they were doing. 00:17:26.820 --> 00:17:28.640 If we're focused on our own game, 00:17:28.670 --> 00:17:30.610 we don't need to worry about the opposition. 00:17:30.640 --> 00:17:34.200 The teams have outdone themselves, but will their hallway 00:17:34.230 --> 00:17:36.050 machines work as well tomorrow? 00:17:42.230 --> 00:17:45.840 I've asked two teams of freethinking engineers to build chain reaction 00:17:45.870 --> 00:17:48.790 machines that would allow me to boil my kettle in the kitchen 00:17:48.810 --> 00:17:52.720 whilst I take care of my morning business here in the WC. 00:17:54.980 --> 00:17:56.230 And it's going well. 00:17:58.540 --> 00:18:00.950 Yesterday, after some early friction... 00:18:00.980 --> 00:18:02.836 Finding arguments when there aren't any, I'm 00:18:02.860 --> 00:18:04.560 agreeing with you. We're not arguing with you. 00:18:04.590 --> 00:18:08.480 ...both teams had spectacular runs in my loo. 00:18:08.510 --> 00:18:10.200 Guys, that is amazing. 00:18:11.690 --> 00:18:15.030 As they arrive for day two, the pressure is on to maintain 00:18:15.060 --> 00:18:18.310 their perfect records with ten hours to create machines 00:18:18.340 --> 00:18:21.800 that cross my hallway ready for the kitchen tomorrow. 00:18:21.820 --> 00:18:25.390 Morning, teams. I want to see outside your comfort zones 00:18:25.420 --> 00:18:29.030 as you continue to build out across the hallway and just to crank 00:18:29.060 --> 00:18:30.920 up the pressure a little bit more, 00:18:30.940 --> 00:18:35.000 I want you to employ a specific scientific principle in today's 00:18:35.020 --> 00:18:38.880 build, and that principle is elasticity. Oh. 00:18:38.900 --> 00:18:43.230 You have ten hours, so get building and be dazzling. 00:18:44.510 --> 00:18:45.480 Carry on. 00:18:46.670 --> 00:18:50.280 Technically if you've got a bouncing ball, that's elasticity 00:18:50.310 --> 00:18:52.750 because anything that changes from its original state and then 00:18:52.770 --> 00:18:55.560 goes back to exactly the same state is elastic. 00:18:55.590 --> 00:18:58.600 So far the rivals don't seem fazed. 00:18:58.630 --> 00:19:00.490 Something that returns to its original shape. 00:19:00.520 --> 00:19:04.000 That's legit the definition of elasticity, and that's what we're going to play with. 00:19:04.020 --> 00:19:06.950 But as Zach will judge them on how creatively they use 00:19:06.980 --> 00:19:10.850 elasticity, they need to really stretch themselves. 00:19:10.880 --> 00:19:13.390 Time for Shini to bounce some ideas around too. 00:19:20.270 --> 00:19:24.080 Archery is a perfect sport to be able to demonstrate elasticity. 00:19:24.110 --> 00:19:27.030 And elasticity is a material's ability 00:19:27.060 --> 00:19:30.670 to return back to its original form after it's been deformed. 00:19:31.770 --> 00:19:35.360 I'm here with Tom Hall, who is an Olympic archer 00:19:35.390 --> 00:19:39.030 for Great Britain, and Tom's loading a carbon fibre arrow 00:19:39.060 --> 00:19:40.600 into the bow right now. 00:19:40.630 --> 00:19:43.147 And as he draws that arrow back, he's actually 00:19:43.171 --> 00:19:46.320 storing potential energy in the frame. 00:19:46.350 --> 00:19:50.110 You can really see the tips of the frame bending all the way back. 00:19:51.520 --> 00:19:55.360 And then suddenly in that moment when he's released that bow, there's 00:19:55.390 --> 00:19:59.290 a transference of elastic potential energy into kinetic energy, 00:19:59.320 --> 00:20:01.600 which is what launches the arrow. 00:20:01.630 --> 00:20:04.930 And you can really see the frame regain its shape. 00:20:07.430 --> 00:20:11.080 For their own sake, the team's workshops don't contain bows and arrows. 00:20:11.110 --> 00:20:15.490 It doesn't matter what your technical definition of elasticity is, that is elastic. 00:20:15.520 --> 00:20:17.400 Just age appropriate toys. 00:20:17.430 --> 00:20:20.080 So now what? There's still two things on either side. 00:20:20.110 --> 00:20:21.680 The thing on this side's dragging. 00:20:21.700 --> 00:20:26.320 Meanwhile, Team Civilised may have mistaken elasticity for tension. 00:20:26.350 --> 00:20:27.850 This string is doing the work. 00:20:27.880 --> 00:20:31.080 As Chienyem explains her master plan for a bungee cord 00:20:31.110 --> 00:20:32.520 and pulley bookcase thing... 00:20:32.550 --> 00:20:33.680 This one's lower. 00:20:33.700 --> 00:20:36.040 This string and this string is connecting the baskets. 00:20:36.070 --> 00:20:39.570 The ball falls in here. This pulls, all the latches come out. 00:20:39.600 --> 00:20:40.600 All the thing pings. 00:20:41.950 --> 00:20:44.760 Does it make sense? Yes. Yes. Perfect sense. 00:20:44.780 --> 00:20:49.160 One, two, three. Goodness gracious. The fact that you two carried it by yourselves. 00:20:49.190 --> 00:20:50.520 Morning, guys. Morning. 00:20:50.550 --> 00:20:53.160 This is your scientific principle you're trying to incorporate. Yeah. 00:20:53.190 --> 00:20:56.760 As this goes down, this comes up. Once it's coming up, we'll pull 00:20:56.780 --> 00:21:00.490 on the latch, which releases a bungee that's in tension. 00:21:00.520 --> 00:21:03.010 And these books will kind of ping... Ping this way. 00:21:03.030 --> 00:21:06.120 The elasticity we added that in so we're using a bungee cord. 00:21:06.150 --> 00:21:07.600 I'll check back in later. OK. 00:21:07.630 --> 00:21:09.120 Now they're all up to speed, 00:21:09.150 --> 00:21:12.170 they want the bathroom dominoes to knock over a suitcase 00:21:12.200 --> 00:21:14.600 that releases a tin starting the bookcase 00:21:14.630 --> 00:21:16.930 bungee cord, pulley bucket thing. 00:21:16.950 --> 00:21:20.170 This triggers a latch, releasing a bungee that twangs a plant 00:21:20.200 --> 00:21:23.290 across a shelf. And that's as far as they've planned. 00:21:25.700 --> 00:21:28.760 The civil engineers of the future are working together. 00:21:30.120 --> 00:21:33.760 With Virtue and Esther calibrating the pulley and bungee cords. 00:21:37.270 --> 00:21:39.530 While Chienyem perfects the dominoes. 00:21:40.950 --> 00:21:43.400 Hoping the theory works in practice. 00:21:43.430 --> 00:21:45.680 Oh, yes. Finally. 00:21:45.700 --> 00:21:47.450 So far, so good. 00:21:47.480 --> 00:21:48.570 Teams! 00:21:50.400 --> 00:21:54.120 An hour ago, you had used the first hour of today's build time. 00:21:54.150 --> 00:21:55.810 You're clever. You'll know what that means. 00:21:55.830 --> 00:21:57.120 Two hours have gone. 00:21:57.150 --> 00:21:59.090 You have eight hours left. 00:21:59.120 --> 00:22:02.010 Carry on. just, you know, kind of letting you know. 00:22:02.030 --> 00:22:05.170 I feel silly now. They need to know. No, they do. 00:22:06.760 --> 00:22:08.530 You finished with the hole driller? 00:22:08.560 --> 00:22:09.508 The hole driller? Call it its real name. Otherwise, 00:22:09.532 --> 00:22:12.400 I'll believe it's called the hole driller. 00:22:12.430 --> 00:22:16.250 Happily, Mike, Baz and josh are at peace after yesterday's tiffs. 00:22:16.280 --> 00:22:19.400 Yesterday was one of those had no idea what we were walking into. 00:22:19.430 --> 00:22:22.090 Basically, we had an idea of what we wanted to do. 00:22:22.120 --> 00:22:26.170 We needed to find the items to be able to execute that plan. 00:22:26.200 --> 00:22:29.970 Today we're finding items and then coming up with a plan. 00:22:31.250 --> 00:22:35.290 My bookcase is the first casualty of this new approach. 00:22:35.320 --> 00:22:37.580 If it falls apart midway, it's not on me. 00:22:38.680 --> 00:22:40.610 Mike's got a plan for a centrepiece. 00:22:40.640 --> 00:22:43.940 But unlike yesterday, no blueprints from Baz to work off. 00:22:45.000 --> 00:22:47.480 Morning, Social Mediocrity. Hello, good morning. 00:22:47.510 --> 00:22:49.330 What have you done to his furniture? 00:22:49.360 --> 00:22:53.810 We had this great idea of a bookcase where the shelves drop at one side. 00:22:53.830 --> 00:22:56.610 So something can slide, drop, slide, drop, slide, drop. 00:22:56.640 --> 00:22:59.660 And where are you doing the scientific principle? The elasticity. 00:22:59.690 --> 00:23:02.120 There's a couple of things. We've got a bouncing net, 00:23:02.150 --> 00:23:04.810 which is obviously elastic, bungee cords and bouncy nets. 00:23:04.830 --> 00:23:07.940 The bathroom's toilet rolls will trigger Mike's collapsing 00:23:07.960 --> 00:23:12.330 bookcase, sending a toy car into a basket, releasing a bungee 00:23:12.360 --> 00:23:15.380 cord powered skateboard that drops a ball down a hat stand 00:23:15.410 --> 00:23:17.380 hitting Josh's bouncy nets. 00:23:19.790 --> 00:23:21.660 With Mike busy with his bookcase... 00:23:23.560 --> 00:23:25.610 ...josh is helping Baz make the ball 00:23:25.640 --> 00:23:28.740 fall from the hat stand as theatrically as possible. 00:23:28.770 --> 00:23:31.610 I think that very gentle gradient gives us a bit of time. 00:23:31.640 --> 00:23:33.050 That's a consistent bounce. 00:23:33.080 --> 00:23:35.020 That's consistent. I don't know what it is. 00:23:35.040 --> 00:23:36.970 Tell Mike why we can't move this now. 00:23:37.000 --> 00:23:40.020 With four hours to go, news of Mike's showstopping bookcase 00:23:40.040 --> 00:23:42.020 may have reached Team Civilised. 00:23:42.040 --> 00:23:46.460 I want that to be like a staircase, like a slow-mo of the marble just down. 00:23:46.490 --> 00:23:50.890 Because they're hitting back... Why can't I just use a hose? 00:23:50.910 --> 00:23:52.770 ...by adding a complex, helter-skelter 00:23:52.790 --> 00:23:55.050 style marble run to their bookcase. 00:23:56.160 --> 00:23:57.170 Touche. 00:23:58.440 --> 00:24:01.660 Hello, Team Civilised. Oh, yes. 00:24:01.690 --> 00:24:06.740 Well, I've got to say, power drills, jigsaw, Multi-Tool, whatever 00:24:06.770 --> 00:24:07.970 that is going on. 00:24:08.000 --> 00:24:11.460 You were charged with being more ambitious today. Are you being? 00:24:11.490 --> 00:24:14.130 Yeah. Most definitely. Yeah. We have so many elements that's cooler. 00:24:14.160 --> 00:24:15.850 So you dialled it up? Yeah, definitely. 00:24:15.880 --> 00:24:17.740 We have this slo-mo thing. 00:24:17.770 --> 00:24:20.970 Oh, yes. Right. So that buys time. 00:24:21.000 --> 00:24:24.540 Yeah, definitely. So ambition, great. 00:24:24.570 --> 00:24:27.690 But are you going to be ready in time? Yeah, I can't lie. 00:24:27.710 --> 00:24:30.540 This time yesterday we were done and we're still trying 00:24:30.570 --> 00:24:33.180 to build this, but, yeah, we'll be done. 00:24:33.210 --> 00:24:36.020 Once built, the marbles from the helter-skelter should hit 00:24:36.040 --> 00:24:40.460 a rat trap, releasing a bungee cord attached to a table that will topple 00:24:40.490 --> 00:24:43.820 over knocking your welly boot pendulum into my kitchen. 00:24:45.360 --> 00:24:47.718 Sorry. A new bolder bookcase could 00:24:47.742 --> 00:24:49.770 swing the competition in their favour. 00:24:49.790 --> 00:24:52.330 Oh, everyone's scared of the rat trap. 00:24:52.360 --> 00:24:53.410 This is our friend. 00:24:53.440 --> 00:24:55.970 But with less than three hours to go, they're struggling 00:24:56.000 --> 00:24:57.660 to position their old nemesis 00:24:57.690 --> 00:25:01.180 so it's reliably triggered by the falling marbles. 00:25:01.210 --> 00:25:04.770 You can just move the trap. The trap's screwed. The block's screwed. Undo the screws 00:25:04.790 --> 00:25:08.180 of the trap, shift it an inch, screw them back in. 00:25:08.210 --> 00:25:11.410 I'd happily drive over a bridge this team designed, 00:25:11.440 --> 00:25:15.770 but if I had a mouse to catch... Set the trap so it doesn't hit me. 00:25:15.790 --> 00:25:16.690 ...I'd get a cat. 00:25:16.710 --> 00:25:17.940 Excuse me. 00:25:17.960 --> 00:25:20.820 Mike's still working on his rival design. 00:25:23.080 --> 00:25:25.900 One down...three to go. 00:25:25.920 --> 00:25:29.210 So when josh needed a hand tipping the ball down a hat stand, 00:25:29.240 --> 00:25:32.740 he had to improvise. If it was on the end of the cane 00:25:32.770 --> 00:25:35.210 and just going up forces it to do that. 00:25:35.240 --> 00:25:36.380 That would work. 00:25:38.290 --> 00:25:41.900 I'm a little worried about time. I don't think the other two seem that worried. 00:25:41.920 --> 00:25:45.950 Teams, you have two hours left. 00:25:45.970 --> 00:25:50.850 In two hours, this and that have to be fully functioning machines. 00:25:50.880 --> 00:25:51.850 Good luck. 00:25:54.290 --> 00:25:58.130 So far, this has been a tale of two battling bookcases. 00:25:59.490 --> 00:26:02.620 As yet, though, no chain reaction machines. 00:26:02.650 --> 00:26:04.310 Let's go. 00:26:04.340 --> 00:26:07.180 But a long haired, bearded chap who's handy with wood 00:26:07.210 --> 00:26:09.420 has just performed a miracle. 00:26:11.840 --> 00:26:13.740 Hallelujah. 00:26:13.770 --> 00:26:18.180 Quite like the kind of cartoony bounce it's got instead of just dropping. 00:26:18.210 --> 00:26:20.540 I quite like that. OK. Right. Come this way. 00:26:20.570 --> 00:26:22.980 You know me, I'll turn up to the unveiling of anything. 00:26:23.010 --> 00:26:25.340 I've arrived in the middle of a serious operation. 00:26:25.370 --> 00:26:28.030 Team Social Mediocrity. Hello. Hello. Mike. 00:26:28.050 --> 00:26:29.820 How long have you spent on this? 00:26:30.840 --> 00:26:31.900 Almost all day. 00:26:31.920 --> 00:26:34.260 We are not far off a test run. 00:26:34.290 --> 00:26:36.620 Exactly. We can do this. But you are... 00:26:36.650 --> 00:26:38.670 Surprisingly not. Not as much as it looks like. 00:26:38.700 --> 00:26:41.110 These fall over, which is where we got to yesterday. 00:26:41.140 --> 00:26:45.500 And then everything else happens. Mhm, absolutely. 00:26:45.530 --> 00:26:49.900 With less than an hour to go, Social Mediocrity are rushing the toy car 00:26:49.920 --> 00:26:52.860 that will join the bookcase to the bungee powered skateboard 00:26:52.890 --> 00:26:57.540 while Team Civilised are desperate to keep up with a successful bookcase test. 00:26:59.850 --> 00:27:01.470 Oh. Never in a million years. 00:27:01.500 --> 00:27:04.060 We didn't test this bit because we knew it worked. 00:27:04.090 --> 00:27:06.500 Come on, come on. Hob] mob]. 00:27:07.890 --> 00:27:09.140 It keeps missing the bin. 00:27:10.850 --> 00:27:14.310 Oh, stop missing the bin, you stupid thing. 00:27:14.340 --> 00:27:16.030 You have one job, to slide. 00:27:16.050 --> 00:27:17.670 What is wrong with you? 00:27:17.700 --> 00:27:20.390 This cruel discrepancy between theory and practice 00:27:20.420 --> 00:27:21.860 is not good news. 00:27:21.890 --> 00:27:23.220 Pull it. 00:27:24.970 --> 00:27:27.220 And what are we doing now? 00:27:27.250 --> 00:27:28.620 Teams. 00:27:28.650 --> 00:27:31.670 You had ten hours build time at the beginning of today. 00:27:31.700 --> 00:27:33.980 You've now got five minutes. 00:27:34.010 --> 00:27:37.300 Social Mediocrity haven't finished joining their machine together. 00:27:38.370 --> 00:27:41.030 What happened there? But now we have to undo it again. 00:27:41.050 --> 00:27:43.580 While Team Civilised are battling to make theirs work. 00:27:43.600 --> 00:27:45.220 This thing is horizontal. 00:27:45.250 --> 00:27:48.060 I'm going to say this quickly so it hurts less. 30 seconds. 00:27:49.800 --> 00:27:52.110 Both teams are going to the wire again. 00:27:52.140 --> 00:27:53.700 Ten seconds. 00:27:53.720 --> 00:27:54.980 Stop counting. 00:27:55.010 --> 00:28:00.190 Five, four, three, two, one. 00:28:00.220 --> 00:28:02.860 Time to stop building. Down tools. 00:28:02.890 --> 00:28:06.470 All you can do now is set for a test run. 00:28:06.500 --> 00:28:08.780 I'm scared. We haven't tested everything. 00:28:08.800 --> 00:28:09.910 I think we're OK. 00:28:14.250 --> 00:28:18.060 First, Team Civilised, whose success rests on the bookcase 00:28:18.090 --> 00:28:21.500 where a falling tin should trigger the bucket pulley, releasing 00:28:21.530 --> 00:28:24.860 the sliding plant, tipping the marbles onto the rat trap 00:28:24.890 --> 00:28:28.780 before hopefully toppling the table and swinging the boot into the kitchen. 00:28:29.930 --> 00:28:33.220 I don't know how to phrase this other than is it going to work? 00:28:34.450 --> 00:28:38.220 Yeah, yeah. Yeah. Yeah, yeah. Cool. 00:28:38.250 --> 00:28:41.190 Probably. I'm going to be positive. 00:28:41.220 --> 00:28:43.556 I want it to work. It needs to work. 00:28:43.580 --> 00:28:44.420 Good luck. Thank you. 00:28:55.850 --> 00:28:57.110 That's good. 00:28:59.780 --> 00:29:02.020 Oh, well done, well done. It looked great. 00:29:02.810 --> 00:29:06.500 Their hard work, planning and testing created a precisely 00:29:06.530 --> 00:29:10.270 calibrated machine and another perfect test run. 00:29:10.300 --> 00:29:13.150 We didn't do as much testing today because we were pretty sure 00:29:13.180 --> 00:29:14.430 that the beginning was working. 00:29:14.460 --> 00:29:17.550 Then towards the end, the beginning just stopped working. 00:29:17.580 --> 00:29:19.580 And we didn't have enough time to test. 00:29:19.600 --> 00:29:22.630 We were way more time pressured on this today than compared to yesterday. 00:29:23.680 --> 00:29:26.910 The pressure is on Social Mediocrity's rival bookcase, 00:29:26.930 --> 00:29:29.220 which should release a toy car, free 00:29:29.250 --> 00:29:32.910 the bungee powered skateboard, tip the walking canes on the hat stand 00:29:32.930 --> 00:29:35.400 and send the ball onto the bouncing nets. 00:29:36.540 --> 00:29:38.480 Social Mediocrity. 00:29:38.510 --> 00:29:41.760 Have you tested? Once. It's not really enough. 00:29:41.790 --> 00:29:43.430 I'm just saying. 00:29:43.460 --> 00:29:46.480 Zach. They've only tested it once and that ball's got 00:29:46.510 --> 00:29:49.990 to bounce perfectly, I just... fingers crossed, like always. 00:29:50.020 --> 00:29:53.230 Guys, hand it over to you and remember, this is a test run. 00:29:53.260 --> 00:29:56.760 OK, but we are all watching. No pressure. Begin. 00:30:07.380 --> 00:30:08.840 Is it going to go through? 00:30:08.860 --> 00:30:10.840 No way. Well done. It did. 00:30:13.980 --> 00:30:15.630 So relieved. 00:30:15.660 --> 00:30:19.120 Mike's bookcase matched his rival's version blow for blow, 00:30:19.150 --> 00:30:23.150 delivering the car to the basket, freeing the skateboard, triggering 00:30:23.180 --> 00:30:26.070 the hat stand ball run and Josh's elastic net. 00:30:26.100 --> 00:30:29.230 We left it way too late testing and we flew by the skin 00:30:29.260 --> 00:30:32.200 of our pants more than we did yesterday. I was so tense. 00:30:32.230 --> 00:30:35.480 I've definitely...| think I've aged massively today. 00:30:35.510 --> 00:30:38.230 I want to complete the task and get to that kettle. 00:30:38.260 --> 00:30:41.166 We want the last one to be reliable. 00:30:41.190 --> 00:30:42.150 Today was chaotic enough. Yeah. 00:30:42.180 --> 00:30:43.870 MIKE: I am a really competitive person. 00:30:43.900 --> 00:30:47.350 We need to focus on what we need to do tomorrow and then somebody 00:30:47.380 --> 00:30:48.653 picks a winner. I hope it's us, 00:30:48.677 --> 00:30:50.310 but... It's us. 00:30:52.610 --> 00:30:55.430 That's the nervous laughter of a worried Mike. 00:30:55.460 --> 00:30:58.120 But will he still be smiling tomorrow? 00:31:00.770 --> 00:31:01.660 Welcome back. 00:31:01.680 --> 00:31:04.112 It's judgement day and what a day 00:31:04.136 --> 00:31:07.340 it will be, because my rivals 00:31:07.370 --> 00:31:11.700 have traded blows with perfect runs and won't want to fall 00:31:11.730 --> 00:31:12.820 at the final hurdle. 00:31:12.850 --> 00:31:15.470 Switching on my kettle in the kitchen after running 00:31:15.500 --> 00:31:20.230 their machines from start to finish and I'm spicing it up even more. 00:31:20.260 --> 00:31:21.870 Morning, teams. 00:31:21.890 --> 00:31:25.670 Today you must complete your build across the kitchen and then run 00:31:25.690 --> 00:31:30.110 your machines in their entirety and you will be judged. 00:31:30.140 --> 00:31:34.510 In your workshop, you will find a tastefully wrapped mystery object which you must 00:31:34.540 --> 00:31:36.230 incorporate into today's build. 00:31:36.260 --> 00:31:40.150 How you use it is up to you. You have ten hours. 00:31:40.180 --> 00:31:43.030 I'll see you on the other side. Good luck. Get building. 00:31:45.730 --> 00:31:49.060 Spices. What you gonna do with a whole lot of spices? Right. 00:31:49.090 --> 00:31:52.340 Spices, I like it. Oh, one less spice than we had. 00:31:52.370 --> 00:31:54.870 And I like the fact that it turns. Yeah. 00:31:54.890 --> 00:31:56.340 What spice didn't you want? 00:31:56.370 --> 00:31:59.550 You didn't want thyme. Ooh, it's of the essence. 00:31:59.570 --> 00:32:00.750 Does it spin? 00:32:00.770 --> 00:32:03.590 Mike's here all week and suggests trying the veal. 00:32:03.620 --> 00:32:06.780 Luckily, Zach won't judge their gags, but their creative use 00:32:06.810 --> 00:32:08.060 of the spice rack. 00:32:09.340 --> 00:32:12.390 And Shini Somara has got some sage advice. 00:32:13.730 --> 00:32:16.060 When most people see a spice rack, they think 00:32:16.090 --> 00:32:18.420 perfect opportunity to get organised in the kitchen. 00:32:18.440 --> 00:32:21.780 What I see is a rotational force called torque. 00:32:22.900 --> 00:32:27.240 Now, teams might decide to maybe attach a bit of string to the spice rack. 00:32:29.770 --> 00:32:33.310 And they could use this torque to maybe pull something in. 00:32:34.420 --> 00:32:38.880 They could actually reverse the direction of the tool, can actually pull the string out. 00:32:38.900 --> 00:32:43.240 Spinning the spice rack the other way and maybe trigger the next chain reaction. 00:32:44.300 --> 00:32:46.710 Plenty of food for thought. 00:32:46.740 --> 00:32:50.160 Thank you. It would have been cute in my hair. It would have. 00:32:50.190 --> 00:32:56.830 But after two days of intense rivalry, Virtue, Esther and Chienyem are hungry for ideas. 00:32:56.860 --> 00:33:01.270 Ours is going to run, theirs is going to run. That's why I want something kind of cool. 00:33:01.300 --> 00:33:04.990 Well, the thing is, like we work on vibes so far. 00:33:05.020 --> 00:33:07.830 In this one, when we started yesterday, our vibes were high. 00:33:07.860 --> 00:33:12.830 We were that ideaful. Here... It's just like I can't even... The vibe is not hitting. 00:33:12.860 --> 00:33:16.270 We're running out, like zero juice of creativity, right? Yeah. 00:33:16.300 --> 00:33:19.880 With team Civilised wracking their brains, Mike, Baz and josh 00:33:19.900 --> 00:33:21.790 are spinning their racks. 00:33:21.820 --> 00:33:24.470 What I'm thinking is if you've got twine wrapped around there, 00:33:24.500 --> 00:33:27.600 you could have a weight drop that sets it off turning. 00:33:27.630 --> 00:33:30.790 That will pull something that releases the second ball. 00:33:30.820 --> 00:33:35.190 The plan is for a ball run to drop a weight that spins their spice rack 00:33:35.220 --> 00:33:39.190 reeling a line that makes a rolling pin start another ball run, dropping 00:33:39.220 --> 00:33:41.027 a yo-yo that switches on a drill 00:33:41.051 --> 00:33:43.070 powered spatula windmill that picks 00:33:43.100 --> 00:33:46.520 up a ball, sending it round to the kettle, flipping the switch. 00:33:46.550 --> 00:33:47.790 Good luck to them. 00:33:50.100 --> 00:33:52.470 The key for today is test it, test it. 00:33:52.500 --> 00:33:54.733 Mike's bodging skills are facing the biggest 00:33:54.757 --> 00:33:56.830 test yet with his drill powered windmill. 00:33:57.740 --> 00:34:00.760 Making a windmill with oversized giant spatulas. 00:34:03.940 --> 00:34:06.710 I'm really confident, more confident than I was yesterday. 00:34:06.740 --> 00:34:09.790 But Team Civilised are catching up. 00:34:09.820 --> 00:34:14.240 We were forced to use elasticity and we did great. We can do this. We can do this. 00:34:14.270 --> 00:34:16.960 It has bearings in it. I do love a good bearing. 00:34:16.990 --> 00:34:20.520 Virtue's also planning to drop a weight to spin the rack. 00:34:20.550 --> 00:34:23.600 And then... I forgot to hold it. 00:34:23.630 --> 00:34:25.430 And to make up for lost time, 00:34:25.450 --> 00:34:28.040 Esther's already working on the start of the machine. 00:34:30.100 --> 00:34:33.150 Please don't crack the plate. While Chienyem nails the end. 00:34:34.700 --> 00:34:38.270 I only care about turning on the kettle. That's my only thing. 00:34:38.300 --> 00:34:42.150 They want the boot from the hallway to topple a chair, pulling a weight 00:34:42.180 --> 00:34:45.960 that spins the spice rack, knocking a pepper pot which releases 00:34:45.990 --> 00:34:49.990 a can down some guttering, pulling a towel that rolls some bread 00:34:50.020 --> 00:34:51.630 into the kettle switch. 00:34:53.100 --> 00:34:57.510 They just need the perfect weight to spin, but not topple the spice rack. 00:34:59.100 --> 00:35:00.070 Jurassic Park. 00:35:01.150 --> 00:35:03.560 Oh, this is going to be cool if it happens. 00:35:03.580 --> 00:35:06.560 If it? It's going to be cool when it happens. 00:35:06.580 --> 00:35:07.680 When it happens. 00:35:14.050 --> 00:35:17.180 There we go. What we like to see, what we like to see. 00:35:18.970 --> 00:35:21.870 Teams. You have four hours left. 00:35:23.010 --> 00:35:26.260 With a place in the semis at stake, the pressure is mounting. 00:35:26.290 --> 00:35:28.130 I still don't know where anything is. 00:35:28.160 --> 00:35:32.900 Baz and josh are creating their ball run and Zach will be keeping a close eye. 00:35:32.930 --> 00:35:35.260 Zach, I'm very pleased that you brought your one 00:35:35.290 --> 00:35:38.260 of these for today's Masterclass because I left mine at home. 00:35:38.290 --> 00:35:42.020 Oh, you don't have one. I left it at home. Remind me what it does. 00:35:42.050 --> 00:35:43.843 This is some of the ways that you 00:35:43.867 --> 00:35:45.660 can do ball tracks. Talk us through. 00:35:45.680 --> 00:35:49.380 So what we have is the entry level of how you get from point A 00:35:49.410 --> 00:35:53.770 to point B, and that's rolling a marble down a chute. It's worked. 00:35:53.800 --> 00:35:56.130 Was that exciting? No. No, not at all. Boring. 00:35:56.160 --> 00:35:57.758 You can't see the ball moving. It 00:35:57.782 --> 00:35:59.380 goes from there to there. Exactly. 00:35:59.410 --> 00:36:02.130 That's why you take it to the next level. Here's something. 00:36:02.160 --> 00:36:06.670 Still does the same purpose of going from point A to point B, just a little fancier. 00:36:06.690 --> 00:36:08.460 But you see the ball move. 00:36:08.490 --> 00:36:11.310 It's using everyday household objects in a clever way. 00:36:11.340 --> 00:36:14.490 It's more creative. It's more fun. That is fun to watch. Exactly. 00:36:14.510 --> 00:36:16.820 Level three, though, is my level. 00:36:16.850 --> 00:36:19.130 It's what I hope to see the teams do. 00:36:19.160 --> 00:36:20.420 Go on. Well, here it goes. 00:36:22.510 --> 00:36:26.900 This is really at the heart of these machines and what you do. 00:36:26.930 --> 00:36:29.980 Exactly. This is the whole point of a chain reaction is taking 00:36:30.010 --> 00:36:33.620 those everyday objects and turning it into something unique and cool. 00:36:35.130 --> 00:36:38.100 With three hours left and ball run sorted... 00:36:38.130 --> 00:36:39.750 That's coming off with some speed. 00:36:39.770 --> 00:36:43.030 ...josh is in his element working on the yo-yo stage. 00:36:43.060 --> 00:36:46.260 He needs it to be knocked off the table and reliably triggered 00:36:46.290 --> 00:36:50.670 the switch for the much anticipated drill powered windmill. 00:36:50.690 --> 00:36:54.140 So this is the big finish. This is how we actually turn the kettle on. 00:36:54.170 --> 00:36:57.750 Meanwhile, Team Civilised are limbering up for their first ever 00:36:57.770 --> 00:37:01.340 full run through. They need this to go well. 00:37:01.370 --> 00:37:02.590 I'm watching with you guys. 00:37:02.620 --> 00:37:04.540 Three, two, one. 00:37:10.340 --> 00:37:13.830 Oh. just kick it. Kick it, kick it. 00:37:18.560 --> 00:37:19.580 Did it fall? 00:37:21.520 --> 00:37:22.540 Come on! 00:37:23.420 --> 00:37:24.420 Damn! Oh. 00:37:25.730 --> 00:37:31.340 The bathroom dominoes and the bread latch failed and with less than an hour left, 00:37:31.370 --> 00:37:33.140 they could be in trouble. 00:37:35.440 --> 00:37:39.950 On the plus side, they're not Mike. It's going too fast to pick up. 00:37:42.570 --> 00:37:46.950 We've got it on the slowest we can and it's still going past and not picking up. 00:37:46.980 --> 00:37:48.420 I'm going to try a second magnet. 00:37:48.440 --> 00:37:50.390 If that doesn't work, then it's game oven 00:37:53.690 --> 00:37:55.550 All right, lads. We'll have to abandon it. 00:37:56.980 --> 00:37:58.030 It doesn't work. 00:37:58.060 --> 00:38:00.700 We're going to have to run something straight to the kettle 00:38:00.730 --> 00:38:03.220 and get all this out of the way. 00:38:03.250 --> 00:38:05.885 With tempers fraying and less than 20 00:38:05.909 --> 00:38:09.060 minutes left, the rivals are digging deep. 00:38:09.090 --> 00:38:12.910 Zach, not a lot of time left before the big moment. What's the state of play? 00:38:12.940 --> 00:38:16.470 Oh, Team Civilised has finally got their machine working, a couple 00:38:16.500 --> 00:38:19.310 interventions here and there, but they're sorting out the issues. 00:38:19.340 --> 00:38:23.860 Over there with team Social Mediocrity though, that looks to me like they're still building. 00:38:23.890 --> 00:38:26.340 They've not let themselves enough time yet again. 00:38:29.170 --> 00:38:30.420 Ten minutes left. 00:38:30.440 --> 00:38:33.060 Team Civilised are rushing to fix their issues. 00:38:34.440 --> 00:38:35.420 This is busy. 00:38:37.090 --> 00:38:39.003 While Baz helps Mike bodge 00:38:39.027 --> 00:38:40.940 a new way to use the windmill... 00:38:40.970 --> 00:38:42.630 That was the plan the whole time. 00:38:45.220 --> 00:38:48.600 Pour this in the tank. Got to turn this thing off, man. 00:38:49.650 --> 00:38:51.470 That thing is dodgy. 00:38:51.500 --> 00:38:53.750 Oh. Oh, the table. 00:38:53.770 --> 00:38:57.350 Teams, you have ten seconds. 00:38:57.380 --> 00:39:02.500 Nine, eight, seven, six, five, 00:39:02.520 --> 00:39:06.390 four, three, two, one. 00:39:06.420 --> 00:39:10.140 End build time. Time to set your whole machine. 00:39:10.170 --> 00:39:12.630 Good luck. Godspeed, my man. 00:39:18.440 --> 00:39:21.520 After three days of blow for blow perfect test runs... 00:39:21.540 --> 00:39:23.850 Oh, there you go. 00:39:23.880 --> 00:39:27.800 ...this nail biting kettle boiling challenge has reached its climax. 00:39:29.190 --> 00:39:33.240 Zach now has to pick a winner who'll earn a place in the semi-final. 00:39:33.270 --> 00:39:37.280 I'll be judging on their creativity, ingenuity, number of transitions 00:39:37.310 --> 00:39:40.680 and the incorporation of the scientific principle and the mystery object. 00:39:40.710 --> 00:39:44.600 If the machines do stop, the teams are allowed to intervene up to three 00:39:44.630 --> 00:39:48.130 times, but teams Civilised aren't planning on that. 00:39:48.160 --> 00:39:51.930 Team Civilised, that's been three days of intense work. 00:39:51.960 --> 00:39:54.640 And this is the moment. How are you feeling? 00:39:54.660 --> 00:39:57.000 I'm feeling super nervous. Yeah, yeah, yeah. 00:39:57.030 --> 00:39:59.290 Funny how it gets to you, isn't it? Yeah. 00:40:00.240 --> 00:40:04.800 In the kitchen, they want the swinging boot to knock the chair, dropping the dinosaur 00:40:04.830 --> 00:40:08.800 that spins the spice rack, knocking a pepper pot that releases a tin 00:40:08.830 --> 00:40:12.080 which sends a loaf of bread down a gutter onto the kettle switch. 00:40:13.240 --> 00:40:17.570 To get this far though, their machine needs to make it through the bathroom and hallway. 00:40:19.520 --> 00:40:22.600 Zach, I mean, that is...they've really gone for it on the last stage. 00:40:22.630 --> 00:40:24.570 Yeah, I think they've done a fantastic job. 00:40:24.590 --> 00:40:26.600 They've had two perfect runs in a row. 00:40:26.630 --> 00:40:28.930 Let's hope for three. Wouldn't it be good? OK. 00:40:28.960 --> 00:40:30.370 There's no putting this off now. 00:40:30.400 --> 00:40:33.880 So, Team Civilised, if you'd like to unleash the beast for the actual 00:40:33.910 --> 00:40:35.680 run, all three stages of your machine. 00:40:35.710 --> 00:40:38.650 This is it. The moment that counts. Good luck. 00:40:38.670 --> 00:40:39.650 Thank you. 00:40:46.040 --> 00:40:47.160 Come on. 00:40:47.190 --> 00:40:49.960 COITIG on, COITIG on, COITIG on. 00:40:49.990 --> 00:40:55.680 Come on, come on, come on, come on, marbles, marbles, come on, come on. 00:40:58.960 --> 00:41:00.650 Oh my word! 00:41:05.880 --> 00:41:06.850 You did it. 00:41:12.540 --> 00:41:15.240 I actually can't believe it. Oh, my goodness. 00:41:15.270 --> 00:41:18.760 This contraption was poetry in motion. 00:41:18.790 --> 00:41:26.370 The details were precise. Elasticity used creatively, and the spice rack spun dynamically. 00:41:26.400 --> 00:41:30.400 We tested it multiple times before, but that was scary. 00:41:30.420 --> 00:41:32.810 My leg was shaking. My heart was pounding. 00:41:32.840 --> 00:41:34.490 I was nervous. 00:41:34.520 --> 00:41:36.810 It's amazing. That machine is amazing. 00:41:36.840 --> 00:41:37.960 I'm so impressed by them. 00:41:37.990 --> 00:41:41.370 I found myself almost as invested in theirs as ours. 00:41:41.400 --> 00:41:45.730 Can Social Mediocrity match their rivals one more time? 00:41:45.760 --> 00:41:46.930 Social Mediocrity. 00:41:46.960 --> 00:41:49.600 It looked today as though you followed your signature 00:41:49.630 --> 00:41:53.320 technique, namely, massive panic at the last minute on the final room. 00:41:53.340 --> 00:41:55.290 Clearly, as you saw, I've been so stressed. 00:41:55.320 --> 00:41:57.730 I really want to get through to the next round, 00:41:57.760 --> 00:42:00.730 but I'm not sure I could put myself through this again. 00:42:00.760 --> 00:42:04.530 In the kitchen, they want the ball run to spin the spice rack, pulling 00:42:04.550 --> 00:42:08.500 a rolling pin that sends another ball towards the yo-yo, which drops 00:42:08.530 --> 00:42:10.860 onto the switch for Mike's redesigned windmill 00:42:10.890 --> 00:42:13.090 that should switch on the kettle. 00:42:14.280 --> 00:42:17.890 But it'll only happen if the machine runs through the first two rooms. 00:42:18.920 --> 00:42:20.170 Zach, what do we think? 00:42:20.200 --> 00:42:22.890 Once again, they've gone ambitious with that final build. 00:42:22.920 --> 00:42:27.330 Absolutely. I mean, the work two clays in a row and I have seen that room work, 00:42:27.350 --> 00:42:30.500 so just link it together and what could go wrong? 00:42:30.530 --> 00:42:34.580 Easy. Totally easy. Guys, this is very much it. 00:42:34.600 --> 00:42:38.890 So good luck. In your own time, start your machine in its entirety. 00:42:40.070 --> 00:42:41.500 OK, Baz, let's do it. 00:42:42.790 --> 00:42:43.760 Good luck. 00:43:07.600 --> 00:43:12.250 This is the tricky bit. That's it. That's the dodgy bit. 00:43:14.120 --> 00:43:15.090 It's going. 00:43:16.430 --> 00:43:17.410 It's going. 00:43:18.470 --> 00:43:19.770 Is the yo-yo YO-Yoing? 00:43:22.200 --> 00:43:23.170 Oh my god. 00:43:24.200 --> 00:43:25.250 Oh my word. 00:43:26.800 --> 00:43:27.810 Chaps. 00:43:30.280 --> 00:43:31.940 Beginning to end. 00:43:35.470 --> 00:43:37.740 That was just relief more than anything. 00:43:38.600 --> 00:43:43.050 Another perfect run with the principle of elasticity 00:43:43.080 --> 00:43:45.380 and spice rack used with style. 00:43:45.410 --> 00:43:48.610 And even Mike's redesign windmill did them proud in the end. 00:43:50.160 --> 00:43:52.020 These teams are inseparable. 00:43:53.330 --> 00:43:56.530 I'm shell-shocked, I'm not going to lie. 00:43:56.550 --> 00:43:58.250 Exhausted as well. Yeah. 00:43:58.280 --> 00:44:02.250 They dismantled a drill and made it into a motor to spin a windmill. 00:44:02.280 --> 00:44:04.170 That's...yeah, that's level. 00:44:05.840 --> 00:44:08.890 Zach's really going to earn his wages picking a winner. 00:44:08.920 --> 00:44:10.940 Well, if we paid him anything. 00:44:10.970 --> 00:44:14.970 I can't believe it. Even in the competitions that I've been a part of, you almost 00:44:15.000 --> 00:44:18.770 never have perfect runs, let alone two teams having them simultaneously. 00:44:18.800 --> 00:44:24.220 Watching the red team. The way they upped their ambition from day one into day two, 00:44:24.250 --> 00:44:25.770 and they really cranked it up. 00:44:25.800 --> 00:44:28.460 I can't tell you how much I love that third room 00:44:28.480 --> 00:44:30.820 and seeing how they used their spice rack. 00:44:30.850 --> 00:44:35.460 I think blues as well...they engineered that thing. 00:44:35.480 --> 00:44:38.540 It really was just in parts a work of art. 00:44:38.560 --> 00:44:42.610 Their bathroom, it's one of my favourite rooms I've ever seen built, 00:44:42.640 --> 00:44:47.220 especially their scientific principle, the way they used the elasticity, the bouncing ball. 00:44:47.250 --> 00:44:50.220 One of my favourite gags I like to use, they nailed it. 00:44:50.250 --> 00:44:55.100 I never envy your judging task, but I particularly do not envy you this one. 00:44:55.130 --> 00:44:57.330 No, this is...boy. 00:44:59.050 --> 00:45:01.973 Teams. First of all, thank you, all of you, 00:45:01.997 --> 00:45:05.490 for gifting us with an incredible competition. 00:45:05.520 --> 00:45:07.900 It really was. Perfect runs at every stage. 00:45:07.930 --> 00:45:11.740 It was tough. It came down to every technical element. I had to look at it. 00:45:11.770 --> 00:45:14.850 In the end, the winning team was the one that completed 00:45:14.880 --> 00:45:18.180 the challenge in the most ingenious fashion. 00:45:18.210 --> 00:45:20.020 And that winning team was... 00:45:25.010 --> 00:45:26.210 ...Social Mediocrity. 00:45:26.230 --> 00:45:27.380 Well done, guys. 00:45:28.770 --> 00:45:31.100 Both teams, seriously staggering. 00:45:33.050 --> 00:45:35.410 Well done, you did really well. 00:45:36.680 --> 00:45:41.460 In the end, Zach separated the teams using pure data. 00:45:41.480 --> 00:45:45.552 Social Mediocrity's machine had an impressive 00:45:45.576 --> 00:45:49.230 48 transitions versus 35 for Team Civilised. 00:45:49.260 --> 00:45:50.700 Really, really pleased that we've won. 00:45:50.730 --> 00:45:53.410 But the prospect of doing it again is quite daunting. 00:45:53.430 --> 00:45:54.540 Yes, we're very proud. 00:45:54.560 --> 00:45:58.420 We're so proud of ourselves because this is 50 metres of clear run. 00:45:58.440 --> 00:46:01.190 Yeah, it seemed so impossible on day one. 00:46:01.210 --> 00:46:04.830 Like who knew we were actually going to get it done and we did. 00:46:04.860 --> 00:46:07.400 Brilliant, brilliant thing to do. It's so hard. 00:46:07.420 --> 00:46:10.720 We get why we didn't win but we lost well. 00:46:10.750 --> 00:46:13.110 I want to say it was neck—and—neck. Yeah. 00:46:13.140 --> 00:46:17.440 Like we almost won, but, you know, yeah, we didn't. And that's okay. 00:46:20.400 --> 00:46:22.080 Next time. This looks familiar. 00:46:22.110 --> 00:46:27.400 Pilots and stunt fans do anything it takes to feed my dog. 00:46:27.420 --> 00:46:28.550 This is interesting. 00:46:28.580 --> 00:46:29.760 These guys are sneaky.