Continuations: Ye or Nay?

This is what your Scheme compiler/interpreter does to everything you write just to support call/cc which most people rarely use. This is why some Schemes don't implement them.

http://en.wikipedia.org/wiki/Continuation-passing_style

; Your code
(define (pyth x y)
(sqrt (+ (* x x) (* y y))))

; Your Scheme repl shitting out your code
(define (pyth& x y k)
(*& x x (lambda (x2)
(*& y y (lambda (y2)
(+& x2 y2 (lambda (x2py2)
(sqrt& x2py2 k))))))))

>>4
Are they part of the fucking standard or not? Are. They. Part. Of. The. Standard.

Nobody cares about how hard continuations are to implement. If it's Scheme, it must have continuations. If it doesn't, then it's not a Scheme.