One answer to "Why is this question..." is because we have defined it so. And why did we define it so? One could make an argument that notions of sets, counting

One answer to "Why is this question..." is because we have defined it so. And why did we define it so? One could make an argument that notions of sets, counting, length, and so on are anthropomorphisms -- we project our bodies onto the universe around us so we can reason about the environment using our specialized brains. (Human brains are specialized to operate in the context of our bodies.) In fact, the Whorf hypothesis [0][1][2] addressed this subject in the context of linguistics. [0] https://en.wikipedia.org/wiki/Linguistic_relativity https://en.wikipedia.org/wiki/Linguistic_relativity [1] https://plato.stanford.edu/entries/linguistics/#SoCalSapWhoHyp https://plato.stanford.edu/entries/linguistics/#SoCalSapWhoH... [2] https://www.sciencedirect.com/science/article/pii/B0080430767030424 https://www.sciencedirect.com/science/article/pii/B008043076... , https://doi.org/10.1016/B0-08-043076-7/03042-4 https://doi.org/10.1016/B0-08-043076-7/03042-4