system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any theories on what quarks are made of?

Are quarks actually the fundamental undivided particles from which everything is made of? Or we just don't yet have the technology to brake them into smaller pieces?
gpt
According to our current picture of particle physics we have, quarks are elementary particles. Everything is made out of elementary particles, such as quarks, electrons, neutrinos, gluons, photons, and some more obscure particles. These particles don't have any substructure that we know of.
If string theory is true, then all of these particles are actually tiny strings, that vibrate in different ways. The exact form of these vibrations is what gives those particles their properties, such as charge, mass, spin, and so on. In this case, the only elementary object would be the string.