When each of these elements, uranium, potassium, radium etc.
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.
Many people are under the false impression that carbon dating proves that dinosaurs and other extinct animals lived millions of years ago.
What many do not realize is that carbon dating is not used to date dinosaurs. Carbon dating is only accurate back a few thousand years.
Consequently organisms living there dated by C14 give ages much older than their true age.
A lake Bonney seal known to have died only a few weeks before was carbon dated.As time progressed each would begin to acquire its slower modern-day stable half-life, but would they all acquire these stable rates in a uniformity which would keep them all in synchrony? If they did, all would give the same ages, you are right.Each would probably arrive at equilibrium at different times.Libbey knew that atmospheric carbon would reach equilibrium in 30,000 years.Because he assumed that the earth was millions of years old, he believed it was already at equilibrium.The age they came back with was only a few thousand years old. And kept their theory that dinosaurs lived "millions of years ago" instead. They then use potassium argon, or other methods, and date the fossils again.