[H]euristics provide explanations of actual behavior; they are not normative ideals. Their existence, however, poses normative questions.

Gerd Gigerenzer, Moral intuition = fast and frugal heuristics?, in Walter Sinnott-Armstrong (ed.) Moral psychology, vol 2: The cognitive science of morality: Intuition and diversity., Cambridge, MA, 2008, pp. 1–26, p. 5