Braden summarized driving aggression as the root of all evil because it incorporates many other problem areas found in people's driving behaviors, such as tailgating and speeding. He then quotes and summarizes two other student reports from the generation prior to his own. Finally, he discusses his own aggressive driving behavior. As a younger person he was more easily provoked to anger because he took the other driver's actions personally and this anger lead him to engage in aggressive driving behaviors. Personalizing another driver's actions seems to be a bit egocentric.
Most drivers have much more on their minds than trying to cause other drivers problems.
However, as Braden pointed out, this internalization took place when he was younger and young people have some natural egocentric tendencies. However, many adults still internalize other people's actions and feel threatened by other driver's mistakes. Aggressive driving may stem from the irrational thought patterns established in earlier teen years. I enjoyed reading Braden's report and found it to be quite informative. He wrote in a light, yet earnest manor.