You make it sound like, 2000 years ago, Aristotle and Plato got together and said, "So yeah, where do we start? Well, how 'bouts we have a 'Big Bang', and evolution of inorganic chemicals into a life form. Sound good to you, Ari?" And then the thousands of years of fools that followed them, especially the empiricist fools starting with Galileo, just added their imaginative but otherwise unsupported-by-evidence speculation to that?
Erasmus, it is you who has the flawed knowledge.
Aristotle and Plato were not merely philosophers, they were the gansters of ancient Greece.
One day, after they had performed a drive-by chariot attack on Socrates, they were hiding in a wine cellar from the cops.
They both got so drunk they started spewing jibberish about the meaning of life and existence. Plato asked "Man, how wus the Earth made?"
But Ari wasn't listening, he was so drunk he was like "Dude, I'm think' 'bout gettin a bunch of girls roun an' havin this Big Bang -"
And Plato was like, "Dude, far out! You're like, a total freakin' genius man! The Big Bang! That's how it totally happend!
And so the Big Bang theory was born. Gallileo did not add to it, obviously, as he was in the Italian Mafia who were rivals to the Grecian Mafia.
So there, Erasmus, not so smart now, eh?