It really disturbed me how many people went through that "this changes everything" transformation at the time. Even if I disagreed more with their former position, it makes me seasick. It's like, there must be something profound missing from people who have such definite views and then a switch flips and they see the world completely differently. I mean, the WTC was attacked before! So how could a thinking person not allow for the possibility of a successful attack? How could it fundamentally be a surprise that upends your worldview? Yet that seemed to be the effect on an awful lot of people.