However I see a missing element in the usual commentary. The error (or bias) goes both ways, yet only one is emphasised. To quote the article: "most people don’t take the power of circumstance seriously enough" (in regards to understanding other people). This bodes well with the popular notions that "We are all the same", and "Everyone can do anything if just given the chance".
Yet the flip side is also valid: Not taking into account the power of disposition when looking at one self (or one's tribe). For example, the reason I just cut in line is because I am, at least somewhat, generally a jerk. This obviously is a harder pill to swallow and perhaps more fatalistic, but perhaps just as important to increasing world (and inner) peace: I should give Others a break, not only because they might be faced with circumstances that I perhaps am not, but equally because I might actually be just as much of an a*hole as I perceive them to be.
The research doesn’t support this though. Behavior seems to be mostly a function of the social context, as milgrim learned. We would love to be snowflakes but we are all pretty much the same.
Does that not describe both of our political parties?