Proof of carbon dating
They ignore evidence that does not fit their preconceived notion.
What would happen if a dinosaur bone were carbon dated?
Scientific research has called the first two assumptions into question.
A slightly more refined version of that lets us verify carbon dating for something like 10,000 years.
That's far enough to prove the 6000 years Biblical account to be wrong.
So they start with the assumption that dinosaurs lived millions of years ago, then manipulate the results until they agree with their conclusion. So why is it that if the date doesn't fit the theory, they change the facts?
This is what my born again Christian friend tries to explain to me everytime we talk about evolution.