Radiometric decay isn't a car with observable different speeds based upon the flow of gasoline into the engine, etc. It is more like a clock, based upon physical principles like water flow. You can say a clock based upon water flow that has always been observed to keep perfect time, may not have always kept such perfect time; but it is ludicrous to suggest that previously the time it would record to be a billion years is really only a thousand. Ludicrous unless you think that previously the water was magical water that could do anything you needed it to do to get the answer you wanted - i.e. the apologetics nonsense that “poof”ter Creationists prefer to science.
Again, the only rate you can measure or observe is the current rate. It is not possible for you to go back in time to see if the rate was the same, or to go into the future and tell us what the rate will be. That’s why the claims of millions or billions of years are ludicrous. You just don’t have enough data points.
Completely fabricated.
Do you do science the way you do argumentation?