[microgood]

Maybe, but the fact that the age of the earth is measured in billions of years is a fact as solid as those you mention.

Not being a physicist, I cannot dispute the science of universe formation, but I have read a bit about the age of rocks using Krypton's and other element's decay (kind of like Carbon dating for rocks) and there is some assuming going on there. And there is no science to support the old primordial soup theory. None at all.

[Soliton]

Please state the assumption to which you refer.

Is it that radioactive elements decay?

Is it that these elements have half lives?