Nuclear Decay

It's impossible to prove that radioisotopes have always decayed at a constant rate throughout history, since the ability to detect and measure radioactive decay is only about 120 years old.

Cursed is the Ground

When God cursed the Earth the nuclear decay began. God's physical presence was the power that maintained matter in a stable condition. God can't tolerate sin, so when sin entered the world he withdrew his presence.

Argument from Ignorance

Popular science (SciPop) doesn't have any positive confirmation for the hypothesis that nuclear decay rates have always been constant. What's a paradigm to do in a situation like this? Go for negative confirmation.