> Look at astrophysics. There's enough of it that's just untestable speculation passed off as fact. The Big Bang Theory is a superb example of this. It's treated as absolute and indisputable fact, yet it was never (and likely never will be) directly observed.
We can observe the red shift and 3K background radiation which is exactly what was predicted by the big bang theory.
It's like hearing a shot and finding a suspect holding a smoking pistol, standing over a corpse with a fresh bullet wound with a perfect ballistics match to the weapon he was holding, yet acquitting him because nobody actually saw him pull the trigger. I hope you never, ever serve on a jury.
If you think that example is ridiculous, the evidence for evolution is far more overwhelming. If you want to claim the earth is actually 6000 years old, you not only ignore overwhelming evidence from biology, you must refute geology, physics, and astronomy as well. We shouldn't even be able to see most of our own galaxy.
As for the story of an 800 year old Noah collecting every species of life on earth to put on his boat, even Santa Claus going down a billion chimneys a night is highly plausible by comparison.