[RadioAstronomer]

Really, how would you know what that evidence would be? Some have suggested that "assuming" the conditions of the origin of the earth, the result would be extreme heat that would have destroyed the earth. That's great if their assumptions are right. Given they don't know the conditions and that any such assumptions are inherently unreasonable as a result, No one can really say heat would be problematic.. much less detectable.

Physics, decay rates, energy, etc. Take a good look at the "fine structure constant" and what it implies.

[BMCDA]

Take a good look at the "fine structure constant" and what it implies.

Or at the Oklo natural reactor ;-)

[b_sharp]

I think you are putting too fine a point on it. You need to lead the bull from the China Shoppe not place an ant in its path. (Even if it is Atom Ant).