Ignorance has many powerful advantages over knowledge. Typically it is simple and easy to communicate, while knowledge, by its very nature, usually tends to be nuanced and complex. Ignorance requires no evidence and no research. It can be endlessly repeated and rapidly spread. It inflames passions. Its pervasiveness wears down those who attempt to combat it. And, often, it seems so outlandish and so -- well, so ignorant -- that it tends to be dismissed and underestimated by those in a position to know better: until it begins to take hold and become a kind of orthodoxy, by which point the damage is very hard to undo.
Which brings me to North Carolina Governor Patrick McCrory.