And also we don't know that C is the limit entirely, but it is so far. Also, we don't know if there are more dimensions in our reality or not because we cannot observe them. And no, I don't have much of a better answer.
Basically, we still know we don't know a lot, and we probably don't know a ton of what we don't know that we don't know. Also magic.
Cops aren't required to protect you from anything. Learn how to protect you and yours. And learn how to read situations, always.