[quote=@Engel]
Circlejerks, where you ever only see one side of an argument and the participants pretend it's a discussion.
[/quote]

I sometimes worry I do this. It's very easy to fall into.

To put it simply, huge real world accidents, including major environmental accidents, sometimes happen because people just confirm/reaffirm what the others around them believe. So, everyone thinks they've made smart decisions; everyone thinks their facilities are safe. And then the worst happens.

Basically, what you mentioned applies to the real world just as much as it does to roleplay, and any of us can easily fall into this trap.

(QUICK! EVERYONE AGREE WITH US SO WE GET A CIRCLEJERK GOING ON)