Did you seriously not read my reply to you where I busted this assumption nonsense USING an example of radioactive decay rates?
FYI, we CAN in fact measure decay rates in the past. We can also test the hypothesis that they were faster in the past which we do every day. If you are able to breath air, think, live, and type to me on this computer, then decay rates were not higher in the past.
Their assumptions are NOT assumptions. They would like them to be, but they are not.
If a nation expects to be ignorant and free, in a state of civilization, it expects what never was and never will be. --Thomas Jefferson