> The problem is almost everyone I talk to in the startup scene thinks that an anonymous function/block == a closure.
This is a big pet peeve of mine - I keep seeing people use 'closure' as a synonym for 'lambda'. It's a simple error, but it bugs the hell out of me.
Then again, it's a dead giveaway that the person has never programmed in a functional paradigm, which may be a good thing to know, depending on the context.