A large clump of neurons can’t grasp universals because universals are immaterial and neurons are material.
This is partly why people believe in an immaterial soul above the material brain.
Fragile soft tissues exist throughout global geological strata. These organic materials cannot survive millions of years and demonstrate recent sedimentary burial.
"The half-life of Uranium-238 is 4.5 billion years."
You can't possibly know that. That's putting blind faith in "science."
And although I think 4,000 years is too young, as a Bible-believing Christian, I believe the world is closer to 6,000-7,000 years old.