How do we know things don’t just get infinitely smaller? If a quark is the smallest particle we know of, what makes up a quark? And so on?

Question

It also makes me wonder if everything is actually the same? I know it’s a silly question, but are all quarks the same (composition wise) if so, does that mean that at our smallest core, we are made up of the same thing? Does this also mean that if not, that there is always going to be variance even to our smallest level? I suppose this question is asking more about what exactly is the composition of the smallest possible particle, and is there really an end?

In: Physics

Answer 1

All science, *always*, includes an invisible “…to the best of our knowledge” at the end.

So: things don’t get infinitely smaller than quarks *to the best of our knowledge*.

If someone proves that they *do* keep getting smaller, then the statement will change. Science *loves* being proven wrong! It means we learned something new.