[shiroiuma]

I wonder if it's possible that the laws of physics were simply different in the early universe. Perhaps the universe didn't spring into being with the laws being exactly the same as they are now, leading to things happening differently than they do now, causing our models to fail because we're trying to extrapolate backwards with the assumption that the laws of physics are static.

[digging]

It's possible and it's been considered, but of course it's extremely difficult to test and we don't have any reason yet to believe it's likely.