[anonyfox]

> But the obstinates are mostly failing

I believe there is a "trying too hard". Solving a worthwhile problem itself might be difficult enough to begin with, but trying to map out a solution plan and stubbornly make every checkpoint a success along the way statistically leads to failure.

Every single step has a chance of ("perfect") success that is not 100%. The more steps, the lower the overall chance of hitting the original problem/solution with the exact path of steps. And if the original plan contains a dead end one could not foresee, people give up at some point alltogether.

But persistence simply means more like "lets take multiple shots at solving the problem", discovering stuff along the way, pivot the strategy or change direction, but ultimately just trying to solve the problem X times, which over time increases the chance of solving it.