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Originally Posted by Taibak
The problem is that understanding the very early universe will eventually require us to finally get general relativity on the same page as quantum mechanics. Right now, those two theories are incompatible as there is still no way to get gravity to work on a quantum level.
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Can you explain what you mean by that? I’ve read that idea many times in many books, but I’ve never seen it explained in terms that I can understand. Why does gravity have to work on the ultra-small scale? Especially since the ultra-small particles are dealing with different kinds of fields and forces on the small scale.
When we clump a bunch of atoms together and call that a “mass”, then the overall mass works under the gravity laws, but why should the small-scale particles work under the large-scale gravity laws, when those small-scale particles have other fields to deal with?