Can you solve the MAGNET RIDDLE? ft YouTube CEO Susan Wojcicki

@4:32 I'm not convinced. Amount of entering molecules = amount of exiting molecules. The net force is = 0. I think that we see a Bernoulli's principle in action. The principle the planes fly by. Blowing air creates a lower pressure area, so the atmospheric pressure in the bottle starts to push the cloth towards the low pressure area. Like, if a car drives over your hand fingers at 100km/h it's going to do less damage than a car that would drive over your fingers with 1km/h. Check out Venturi tube.

@5:19 Drop both of them close to each other. If they will repel in the fall due to induced magnetic fields will do nothing to help me to determine which one of them is actually a magnet without breaking them. So I would try to lay on the floor, launch them in a straight line by aligning them with a wall. The non-magnetical piece should stick to a straighter trajectory due to.. Idk, you can go on a trail of chain  induced magnetic domain reactions to deduce what is what in it. But the magnet might have a slightly uneven deviations from it's center of mass due to mutual irregularities on the molecular level it might have some slight inconsistencies in it's direction/time plot pattern. But your guess is as good as mine.