# [racket] Evaluation problem

Hi!
I have been going through some lambda-calculus exercises with Racket. I have stumbled on a puzzling problem where beta-reduction by hand leads to different result from that generated by Racket.
(define select-first
(lambda (first)
(lambda (second)
first)))
(define select-second
(lambda (first)
(lambda (second)
second)))
(define make-pair
(lambda (first)
(lambda (second)
(lambda (func)
(func first) second))))
-----
>* ((select-first 'a) 'b)
*'a
>* ((select-second 'a) 'b)
*'b
>* (((make-pair 'a) 'b) select-first)
*'b
>* (((make-pair 'a) 'b) select-second)
*'b
-------
So, select-first returns the correct result when applied directly but returns the second argument when applied via make-pair. Also, I have checked that the implementation of make-pair gives the correct result if I do the beta-reduction by hand.
I suspect that I'm missing something obvious, but I really cannot find the reason why make-pair misbehaves - you gurus on this mailing-list probably can pinpoint the problem instantly :)
Best regards,
-Mikko Tiihonen
P.S. Having used Racket for some months now, I find both Racket and the community around it really great!