[ClearCase_guy]

"Going back 30,000 years requires you to speculate," he says, "because we really don't have much of an idea what was going on."

An awful lot of science is just speculation and guesswork. There's nothing really wrong with that, but if someone says, "That doesn't really make that much sense", they are apt to be shouted down "You moron! It's settled science! The evidence is overwhelming! What? You think some man in the sky did it???"

Much of so-called science is just pushing a belief system based on little evidence.

[Bellflower]

Much of so-called science is just pushing a belief system based on little evidence.

And once that belief system is accepted it is used as fact to support other belief systems.