Turtles aren't just for kids

Code demonstrations are boring. We've got to lighten it up.

I have to confess that I’ve gotten terribly bored with writing Haskell demonstrations.

The problem is that the only effect I’ve ever been able to achieve—when limited to a program that can be fully presented within the scope of a blog post or book chapter—is printing text. No matter what interesting Haskell concepts I introduce, no matter what kind of fi…