These questions are't exactly unanswered but existing varied answers have failed to satisfy us which is why we're still in the quest since time immemorial. The tragedy is nothing helps.
R Society & Culture
History is meant to teach us something. But when we look at our History, it appears we haven't much learnt anything from it, or why would we keep repeating same mistakes again and again?
First off: History is not the only thing to repeat itself. So do numbers, alphabets, sounds, signals, waves, music notes, cells, atoms, Math, Geography, Nature, body-functions, seasons, space, galaxies! Everything, if you look closely enough, is just a systematic repetition of itself over and over again and again. Even water cycle, rock cycle, life...