Cowboys are my heros.
Calculated Trial and Error is somewhat of a myth too. Nobody can explain it either.
Well your calculated trail and error is how the caveman leaned not to try dumb thingEven they observed out cavemen get killed over.
Even experts at some simple task like flying a jet aircraft, because when your muscle memory don't kick in, you could died from not reacting to a mechinal failure fast enought.
Trail and Efford do work work if you have all the time in world to keep the pocess going.