Re: [Haskell-cafe] Very freaky

On Tue, Jul 10, 2007 at 08:59:16PM +0100, Andrew Coppin wrote:

...

http://haskell.org/haskellwiki/Curry-Howard-Lambek_correspondence might be interesting - same idea, but written for a Haskell audience.

An interesting read - although again a little over my head.

I find myself wondering... A polymorphic type signature such as (a -> b) -> a -> b says "given that a implies b and a is true, b is true". But what does, say, "Maybe x -> x" say?

Given that x may or may not be true, x is definitely true. Which, of course, is absurd. Stefan