That it is just assumed that dating methods shown accurate for thousands of years apply to millions of years.
That is the same as saying its just assumed that the observable laws of science don't have an expiration date.
That is the same as saying that they do have one.
You are changing the argument. Radioisotope dating isn’t a scientific law. It is a dating process used by scientists which has certain inherent assumptions that affect the outcome.
Ken Ham does not believe that any scientific law has an expiration date. Again what scientific law does Ken Ham say doesn’t apply hundreds of years ago. You said they he argues that NO scientific law applies hundreds of years ago. So please name ONE scientific law that Ken Ham argues doesn’t apply hundreds of years ago?
I am not going to argue dating methods with you. I am asking you to defend your original assertion that.
Ken Ham argued that there is not a single law of science observed today that we can assume applied even a few hundred years ago.