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  >> It's frustrating because . . .
  > Slow down a bit to create another buffer
  > I think if you reflect a bit you'll find
The parent post does return to the psycho-emotional layer of the problem but on the whole the exchange brings to mind the "two movies, one screen" model of perennial problems. In many of the comments here some people emphasize the problem in terms of physics and some see the problem in terms of psychology (both have overlap and are valid).

A third perspective may be "game theory." I think the Prisoner's Dilemma [0] could explain some aspects of the physical/mental problem. In the set below, Driver A's strategy isn't dependent on a singular predictable Driver B but all drivers that may perform the role of Driver B during the course of a commute.

  Agent       Cooperate     Defect
  Driver A    leaves space  doesn't
  Driver B^n  merge         stay
Leaving aside all times in which a Driver B must merge, such as lane ending zippers or merging to approach an exit lane, Driver B merges because there is some advantage to being in the lane of Driver A. If Driver A maintains space they will not just lose to one Driver B but to all Driver Bs.

I conjecture that this is a collective action problem and that above a certain traffic saturation point there must be a social taboo against changing lanes.

This is not to claim that individual perspective shifting is not important. I am reminded of Foster Wallace's Kenyon address "This is Water," [1] quoted below. However, the task of changing individual perspectives is vastly higher energy than the creation of a social taboo, which is why purity codes and other social inhibitors are so prevalent.

  If I choose to think this way in a store and on the freeway, fine. Lots of us 
  do. Except thinking this way tends to be so easy and automatic that it 
  doesn’t have to be a choice. It is my natural default setting. [...]
  
  The thing is that, of course, there are totally different ways to think about 
  these kinds of situations. [...] [Maybe] the Hummer that just cut me off is 
  maybe being driven by a father whose little child is hurt or sick in the seat 
  next to him, and he’s trying to get this kid to the hospital, and he’s in a 
  bigger, more legitimate hurry than I am: it is actually I who am in HIS way.
0. https://en.wikipedia.org/wiki/Prisoner's_dilemma

1. https://fs.blog/david-foster-wallace-this-is-water/





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