> Generally getting smooshed from behind is a low-likelihood event.

Doesn't this directly contradict the numbers given in the original linked post (40% of accidents)?

Edit: there's some discussion about this on[1]. Although, even a 20% number seems very relevant, and not a low-likelihood event.

[1] http://www.dcrainmaker.com/2014/07/hands-on-backtracker-rada...