Is the Past the Key to the Present?

Hawking: Can we discover that the laws we already know, that certain properties of physics depend on whether you're looking at them in a mirror or not? We hope to reveal that symmetries have to be broken. So far we haven't seen it. It means that nature is startlingly resilient and impervious to all our testing. Yes, is macinating. That's lyell's principle of uniformitarianism, the past is the key to the present. Maybe it's not. Maybe the speed oflight was different rig past, or gravity was different, or whatever. Right? The last thing i'll say about that hawking. Hawking book, there's a scene in