In many European countries we have populist indirect democratic systems. The people elect, in a proportionate manner, a parliament. The parliament with all its parties is representative of the political opinions among the citizens. It is reasonable to claim that the people rule itself through the political institutions.

Global governance need not take a democratic form.

The best explanation why people agree is that they have converged on true answers.

It is obvious, I think, that national democracy withers. This has to do with globalisation.

It is hard to tell if capital punishment has such an effect. And even if, in some contexts it has (such as in the American South with a very high incidence of murder), this effect may very well go away if a decent welfare state was replaced for the existing social order.

The US two party system is very different, of course. Here the people decides about who should rule them, but it is not reasonable to claim that the people rules itself through the political institutions. In comparison, I find that the standard European system is better, also as a model for global democracy.

My conjecture is that most people will refuse to let go, even when their lives have become boring (at least in comparisons with possible lives lived by new generations). If this happens, there will eventually be no room for new generations. A kind of collective irrationality will lead to a bleak life for the last generation that decides to stay around. Unless we put and end to the human race (through global warming, for example), before this happens, individual egoism will block the path to a better world.