The US is, historically speaking and also when compared to many contemporary societies, very highly educated. If what you say is true, that even in the US most people are 'uneducated idiots' who never decide anything (or rather, for the sake of argument, should never decide anything, which I think is what you were getting at - correct me if I'm wrong), then it's a pretty compelling argument that democracy can never work.

I happen to disagree. Americans are not 'uneducated idiots' but rather the target of perhaps the most sophisticated, ubiquitous, and persistant propaganda effort ever seen in human history. When you consider the stakes involved (massive military, very large economy) it is not such a surprise. As for what to do about that, I propose going to the source: reduce the size of the military, and reduce the size of the economy (by splitting it into several pieces).