Let me ask a simple question that I assuming is assumed.
How do testers find the initial content of carbon 14? That carbon which was tied up in the object when it was sealed up X number of years ago?
I have been told by more than a couple sources that initial C14 MUST be assumed.
I know we know the half-life of C14 - 5700 years or close iirc.
I know we can find the amount of C14 in an object currently.
How then do we know how much C14 (or any other dating isotope) was penned up in an object when it was formed.
Is someone assuming?