re: #4 Mattand
It’s not ‘ignorance’ that drove Christie to yell at that teacher; For a Republican governor of any state those teachers not expressly on your side are the enemy, politically. The unions those teachers belong will endorse the Democrat in the governor’s race no matter what the Republican says or does, so the Republican has no incentive to keep an open mind when a teacher asks them a question. The best tactic for the Republican is to either attack or deliver a canned response. Trying to deliver a thinking response risks the candidate producing a sound byte that can be used for a Democratic ‘Gotcha!’ ad. Better to stick to the script.