Hypercivilisations and the Primitive Extraterrestrial Hypothesis
More and more specialists admit that life is everywhere in Universe and three-four billion years of favourable conditions, lasting on a planet, ensures the emergence and development of intelligent beings and eventually the birth of a “technological civiliz...
Wait till they get off the big bang crack pipe.
Then we can realize there is no conceivable timeline we can suggest.
Basically electrical theory driving spiral galaxy formation for time immemorial.