When 'show' beats 'tell'

I'm grateful to cartoonist Matt Buck, who has sent me this link from his own blog Matt Buck's Hack Cartoons. It's a Youtube video created by a professor of anthropology in Kansas, which cleverly shows the power of animation to demonstrate the principles of web 2.0. A good example of how 'show' can sometimes be better than 'tell' when it comes to explaining tricky concepts.