If government were to grant rights, it can just as well take them away, thus they would not be inalienable.
If rights were to come from a supernatural force, then those rights would only be as defensible as the existence of the supernatural. Such a mystical belief is an attack on reason and by extension an attack on man himself.
I'm glad you got a kick out of that)
What I'm saying is, if the predictions are correct, then that would give it the empirical evidence, like Einstein's field equations