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Replace "President" with "leader", "chieftain", "captain", "boss", "guide" or any other word such as this and we still get to the same place: nowhere.Yes and no. Captains (of ships) can be very effective. So can many leaders, and CEOs of companies that didn't go public or take too much VC money. It gets easier when people are expected to listen to you and you don't have to worry about reelection.
> I guess that at the end we are doomed to coexist with poverty, hunger, illnesses and all of the bad things that could be easily destroyed if we really wanted to, but looks like that despite the fact that we all say we want to get rid of these things we really don't want to.
As humans we really suck at coordinating ourselves together. It's a large an interesting topic. That's why I think technological solutions are so alluring. As undemocratic as it is, you can get much more done if you sidestep the need to first get everyone on board. So I guess we will be doomed to coexist with relative poverty as long as there's anything - status, power, wealth - people want to have more of than their neighbours. But absolute poverty? People going hungry? This, I believe, can be solved, and with enough technology can be solved without asking everyone for opinion. If food gets dirt cheap everywhere (and I mean "dirt cheap", not "pretty cheap thanks to economies of scale but not cheap enough for those actually making that food"), even the poorest person on Earth will have access to it, because there'll be zero reason for everyone to expend energy on preventing that access.