Problem 1: Tip toward the wood, as the wood will lose more buoyancy from the air than the lead.

As for the extreme case here, let's use the helium balloon. You tie the helium balloon to the right hand side of the scale. Now, to get the bar on the scale horizontal (balanced) you need to hang the lead weight closer to the fulcrum but on the right hand side of the scale too.

Now remove the air.

The balloon was only pulling up because of the air. Without the air it will hang down. So, we now have two things hanging down on the same side of the scale, so it's very obvious which way the scale will swing...

Problem 2: pi*20m Circumference = pi*diameter. Poles increase diameter by 20m. Really not sure where the 'extreme case' comes into this though?

Oh I know he won't be sacked for it, that's not the way policing works at all. There's probably nothing to be done at all and the public just need to shut up and do as they're told.

The main problem is that I don't actually think he's really losing his cool, this is just about teaching compliance. He knew before hand that he would react like this if the kid gave him anything other than complete compliance. This is a lesson, it's not some hot head letting off steam. The lesson is you do not ever question the authority of the police. Regardless of what they do you shut up and comply or you will be hurt.

No it's not. He makes the demo one like that but the finished one that looks like it's going to fit together too tight is not glued.

As for it being useful if 3D printed I really don't think it's got any value as a joint in that sense. If you want to make something quick and easy to put together and strong there are plenty of ways of doing so with the joints we already have which would be better than this joint.

This joint is an interesting exercise in geometry and an interesting challenge to make, but it's actually not a very good joint. It's overly complicated without adding strength and just pulls apart.

It's a clever little exercise but not actually useful in the real world.

I'd like to see how fast an AC72 would do this course. The wing sails are very different in performance to conventional cloth, and they turn a lot of the conventions of sailing on their heads (they sail faster downwind in more adverse tide due to sailing faster than the wind for example). I know the kite is fast, but is it that fast?

But the whole point of the joint is that it can be taken apart and put back together again in three different ways. Like he says at the end of the video it's a rubbish joint in every other way. As much as it would look solid, it wasn't.

Brilliant!

Black, white, whatever. That cop is way, way out of line. On what planet is this the way a grown adult acts, let alone one they give a fucking gun to and power of arrest?

This is bullshit. That cop needs fucking sacking. He's not able to control his temper when faced with a little schoolboy, he's a liability if he's ever needed for proper police work.

That is one method, but it is possible to do it with a planted card rather than a full deck.

This is my little brother's trick that he tends to do if someone finds out he's a magician and asks the inevitable 'show us a trick then!'

When he did it to me it was at our parents house. He came into the room, put his bag (a back pack) in the middle of the floor and sat down on the sofa. He then turned to me and did the imaginary pack spiel, just like Rose does in the video. I choose a card and announce it to the room.

He then tells me to go to his bag and look through it for his wallet. I find the wallet and take it out of the bag. It's not a big bag and there's only one wallet. He then tells me to open it and look through the card slots until I find a playing card. I do so, there's only one card. Predictably it's the card I've chosen.

There's no trick deck and I'm pretty sure it's not a trick wallet. He didn't handle the bag or the wallet after he put the bag down in the middle of the floor and sat down.

He won't tell me how it's done, but I've seen him do it numerous times to numerous people. It's always the same method although if he's out in public he might just keep his bag on his shoulder rather than put it on the floor and he'll handle his wallet and show the card, but in a way so that everyone can see what he's doing. I've asked him about that and the handling isn't necessary for the trick. the method is the same whether he's handling the bag/wallet or not.

He's a magician who designs tricks for other magicians. He's worked as a technical advisor for magic TV shows, designing props and methods. He specialises in mentalism. He doesn't talk that much about how the tricks are done. He'll help me out if I'm guessing along the right lines but I don't push for answers too much. I've done a little magic myself when younger, but nothing on his level.

The trick deck is just one way of doing this effect, but it's not the only way.

It is mind boggling that people in this day and age can even consider doing anything other than completely embracing science. Our world is utterly dependent on science. Everything have use, everything we interact with, everything is here because of science. How can there be a war on science? It just doesn't make any sense.

But it's here. It's absolute madness, but it's here.

Genius.

Interesting but it bugs me that the first example, the square, she does sub-optimally. Make the first fold corner to corner, then the second fold in half in line with the other corner then cut. Two folds, one cut. She does three folds one cut.

Why is shit like this presented with such reverence? For all the ceremony and posh suits these are criminal thugs. They aren't just some other culture that does things it's own way and has finally accepted the guy as one of their own, they know exactly what they are and what they're doing.

I'm sure he got a very interesting look at the way a very secretive society is run. There will be a lot that he's seen and photographed that the rest of the world won't know about or have seen before. It's interesting, I get that, but I think it would be all the more interesting if juxtaposed with the bad stuff. Show the photos of them there, all solemn in their suits, but don't forget the kids who are starving to death as their parents rot in prison or are killing themselves slowly in some disgusting drug den somewhere, paying for everything the Yakuza have.

Everything they have is built on death, pain and suffering of others.

That was so, so well done. Brilliant!

I think it's more along the lines of there being everything wrong with the car and this is the most fun they can think to have with it!

"C'mon honey..."

This engine means a lot to this guy. It's a great piece of engineering, and it's good to see he really does care about it and is proud of what he's made