Well, given that Haskell 1.0 didn't use category theoretic structures in any serious capacity and it's IO was based on lazy streams, I'd say it's already made t

Well, given that Haskell 1.0 didn't use category theoretic structures in any serious capacity and it's IO was based on lazy streams, I'd say it's already made things easier in Haskell. How long did it take for calculus to make things easier for most people?