system
Given the following post, respond as if you're commenting on Reddit:
human
If atoms are made up of protons and neutrons and protons and neutrons are made up of quarks, then what could quarks possibly be made up of?
gpt
As of right now, we don't think quarks are made of anything besides quark. There has to be some "lowest layer", and we think that quarks are that lowest layer for neutrons and protons and the like. All experiments we have conducted seem to show that quarks are fundamental, but it's also possible they're made of something even more fundamental we don't know of yet.