00 - Permutations The "old shell game" is an example of a permutation. Three shells, one containing a pea, are in a row in front of the sucker -- er, I mean, client. 01- Physicist Lee Smolin talks about how the scientific community works: as he puts it, "we fight and argue as hard as we can," but everyone accepts that the next generation of scientists will decide who's right. And, he says, that's how democracy works, too. If you may need these contents in other language, try our Translator Online: