Nonsense. When your coarse-grain democracy that far nobody decided anything. People tried to get what they wanted, which was their own favourite through, and the result is an average of all those votes.
I don't dispute the system. That's how democracy works; you can't please all of the people all of the time, so you try to please a majority of the people for as much of the time as you can. And if you get it wrong, then there'll be another guy along in a few years who'll probably get it wrong in the other direction, and so hopefully the country keeps going.
But the French didn't decide they wanted a left-right contest. That's an average of all their decisions. All you can really say is 'More people wanted left or right than wanted anything else.' Which doesn't tell you much about the French, but does represent the facts...
