Day after this, I started looking at a CPE course. It talked about more knowledge, acceptance, and more alternatives as positives. The negatives were dominance by 1 or 2 people (happens a lot), conformity, laziness (picking 1st choice considered), competition within the group (winning becomes the objective). Also mentions that group decisions tend to be riskier than individual decisions (nobody has responsibility on their head).

In this type of decision making there is self-selection. I think of the overwhelming attention paid to cyclists in cities. They are a tiny minority, but they are very vocal. So they get things that benefit the 0.5% and are detrimental to the 95%.