Aren't these 2 complementary things? Goals tell you what you need to achieve, constraints tell you what road to take or rather avoid taking, to get there. You

Aren't these 2 complementary things? Goals tell you what you need to achieve, constraints tell you what road to take or rather avoid taking, to get there. You need to set goals if you don't want to wander around for a while on the "ok" paths until you stumble onto something that might be your target or just a local maximum.