😅
Well, one can certainly see an advantage to being tenacious. However, there might be circumstances in which it isn't a good idea. After all, only 30% of all people are supposed to have the gene. Those without out (70%) seem to be doing better😆
Almost like left-handedness, it's an advantage up to a certain point (12%). Stubborness is considered a negative trait. If everyone was stubborn then nothing would get done. But if nobody was stubborn, nothing would get done.