Right. And those feedback loops do very much exist -- you can find plenty of women sharing their experiences of what it feels like to be the only woman in a room full of men. Over and over again. Being an "only" is rough. I'd imagine that going from 2 to 3 in a group is a much, much smaller change.
It also means that success often requires acting like a man, even when that is neither natural nor optimal for the situation. That's one reason why more than minimal diversity helps -- if there is a benefit to be had from diversity, you may not get it from having an "only" who is pressured to fit in.
It also means that success often requires acting like a man, even when that is neither natural nor optimal for the situation. That's one reason why more than minimal diversity helps -- if there is a benefit to be had from diversity, you may not get it from having an "only" who is pressured to fit in.