Many people are ignorant of many things. This is not surprising and entirely forgivable, given how much knowledge there is to be had, and how much of it is highly specialized. What is less forgivable is how people feel free to spout off and propose things without the slightest idea of the complexities they are dealing with. The French revolutionaries blithely imagined they could create a whole new society with its own rules, just by thinking it up. They ended with a bloodbath in a pigsty.