SICP or HTDP?

A non-programmer wants to learn. Which do I show them: SICP or HTDP? Or does trying to teach them SICP in MirandaHaskell (for the syntax & pattern matching) make more sense?

>>4
Make sense. This is someone with no experience with programming at all, but she's a scientist and very good at math.

>>7
Because often the syntax makes more sense to people familiar with mathematical notation. Prefix isn't hard to learn, but (a+b) == (c*d) is still more straightforward than (= (+ a b) (* c d)).
Similarly,
sum term [] = 0
sum term x:xs = (term x) + (sum term xs)
shows the algorithm more clearly than
(define (sum term sequence)
  (if (null? sequence) 0
      (+ (term (car sequence))
         (sum term (cdr sequence))))).

I'm a fan of Scheme. It has some serious advantages over ML-type languages. However, in terms of being able to clearly express an algorithm to people familiar with math but not Lisp, the ML family usually wins.