Ah, but it does depend on what makes a rock a rock. They're still touching, are they not? So why not one rock? And what makes a rock different from mud, both come from mighty Earth, no?

..... This is a good point.

Hmm. She wants to meticulously figure out the exact definition of a rock for their purposes here, but she also thinks that this isn't a very useful definition to spend a lot of time figuring out the particulars of. The definition of what is and isn't a rock doesn't seem like it's groundbreaking information, even here in her (comparatively) very small Chamber. Also, it sounds boring. This seems more like an example to demonstrate something she will apply later instead of a thing she should try to answer now. So... can sometimes things just be... fuzzy? Up for interpretation/redefinition depending on the circumstances and need?