Roosevelt and my dad

FDR said:

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

My father said:

Do something, even if it's wrong.

Wikipedia calls Adaptive Management:

a structured, iterative process of optimal decision making in the face of uncertainty, with an aim to reducing uncertainty over time via system monitoring. In this way, decision making simultaneously maximizes one or more resource objectives and, either passively or actively, accrues information needed to improve future management. AM is often characterized as "learning by doing."