Nye, “the science guy,” plays by the rules of the scientific method and accepts the fundamental principle of biology: evolution by natural selection.
Ham fabricates elaborate tales about Adam and Eve coexisting with vegetarian ceratosauruses in the Garden of Eden.
So if scientists believe that a creature lived millions of years ago, then they would need to date it another way. They assume dinosaurs lived millions of years ago (instead of thousands of years ago like the bible says).
They ignore evidence that does not fit their preconceived notion.
By measuring the ratio of the radio isotope to non-radioactive carbon, the amount of carbon-14 decay can be worked out, thereby giving an age for the specimen in question.