I think this is very sound advice. But it can be equally effective (and maybe even more fun) to careen a prototype through the problem space as quickly as possi

I think this is very sound advice. But it can be equally effective (and maybe even more fun) to careen a prototype through the problem space as quickly as possible to see what comes to light. Even if I can't solve a problem this way, I usually have a leg up on the next attempt from what I learned. Or maybe it even works, and then gets refactored or redesigned to improve in the necessary dimensions.