And despite their imperfections we actually do use courts and evidence, rather than seeing whether suspects float or sink, or asking God to smite the guilty. Why do you suppose this is?
Because we were intelligently designed to apply our reason and senses to the world we live in. That does not negate the problem of testing, i.e. recreating in a scientific context, the big bang and all the history that has ensued. We all apply our reason to infer from the evidence what that history is about. Empirical science, as far as I am concerned, is about the here and now; what can be seen by the eyeballs as it happens. Since we are creatures of history, we are bound to make extrapolations, and are limited to our experiences. That makes for a particularly tenuous, tentative arrangement when it comes to declaring what is, was, and ever shall be.