Life on Earth
Was anyone interested in the origin of all life on Earth, in particular the homo sapiens specie? The evolution theory (i.e. that material life is a mechanism which has built-in functions to change or mutate, no matter what the ultimate reason is) is very new, it has been officially accepted by the educational organizations about just 2 centuries ago. Before this of course people for centuries thought that, using today's terms, life has the extra-terrestial origin and is not, by any means, limited to the planet Earth.
I realized how important any answers to this single question are. Having even multiple, not just one, "hypothesis" might give a groundbreaking suggestions to better understand reincarnation, life after death, and obviously OBE experiences.
