I think it's important to distinguish what one might call "inauthentic behavior" and "behavior that goes beyond ones own personal preferences". The party examp

I think it's important to distinguish what one might call "inauthentic behavior" and "behavior that goes beyond ones own personal preferences". The party example is a good point. A very common thing is to go to a friends party as a show of support for their thing, and to, for lack of a better word, have numbers be good. But it's not inauthentic to support your friend's thing! Sometimes you do a thing because it's for someone else. And when the wave of departures happen... there is a mix of "I also wanted to leave", but "oh I guess it's time to leave" is another, and "oh I'm not totally done but it's starting to end so" are all on the spectrum of possibilities, and ones that I've held. I think this group behavior is ... authentic and human. Acting on what you are thinking, at its extreme, is kind of indistinguishable from having no impulse control.