 that eventually is going to end and is going to go back. And every time this happens, the laws of nature may change. But this is all very speculative. It's awesome to do those models, but we don't know. Unfortunately, despite 50 years of very hard work by very smart people, we have beautiful theories like string theory and a bunch of others, but we don't really have an understanding. So we don't know what the Big Bang is. And in my opinion, it's an unknowable.