Comment by sfink

> For example, most doctors believe in vaccines, but that's not group think, it's based in evidence that they have studied. From the outside, it might seem like group think.

I'm willing to bet that in most cases, that is groupthink. It's hard to tell, because the conclusion is identical to one based on evidence, so you can't infer from the opinion whether it's groupthink or not.

Sometimes you can tell by how someone holds a belief. Defensiveness, unwillingness to consider ways in which their chosen belief is not 100% wholly good, or shouting someone down are evidence of groupthink. For example: if someone brings up that in the past some inactive virus vaccines contained live viruses and a doctor claims that it never happened and could never happen, that's either groupthink or just a doctor sick of arguing with uninformed patients who has given up bothering with explaining the intellectual basis of his beliefs.

My personal suspicion is that the 1% don't exist, that everyone's opinions and beliefs are a mishmash of tribalism and intellectual conclusions, it's just that the balance is very different in different people. I try very hard to make my stances intellectually based and evidence-driven, yet I continually discover that more and more of my deeply held policy positions aren't as clear cut and the real world is more nuanced than I thought.

It's not like nuance is a binary thing (by definition!)