[Boogieman]

Great. Just as soon as you discover a perfectly placed mirror planet that will allow you to see into the Earth’s past, you might be able to actually observe a few of the things that paleontologists and geologists speculate about. You still wouldn’t be able to conduct scientific experiments in the past, but you’d be halfway to actual science.

[GunRunner]

There's plenty to study without a time machine. You just have to know the difference between scientific study and the land of make believe.

The point is, there are multiple ways to look back in time, and cosmology alone debunks a young universe.