Feynman didn't oppose cooperation. The advice is to disregard naysayers who tell you your effort is going in a wrong direction or is doomed. But yes, it works

Feynman didn't oppose cooperation. The advice is to disregard naysayers who tell you your effort is going in a wrong direction or is doomed. But yes, it works best if you are a genius who is likely to be right. But also, analysis paralysis hurts the non genius more, because the genius can make more progress, which is motivating, in the time that the non genius gives up and tries something different. For the non genius, though, discouragement is in the form "you can't do this", not "it's a bad idea in.l general".