system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are humans said to be the only species on earth to be self-aware and able to think philosphically?

And at which point in evolution did this capability come?
gpt
They aren't. Several other mammals are self aware. You can tell by seeing if they recognize themselves in a mirror. You put a silly bow on their head, show them in a mirror and see if they think their is a bow on THEIR head.

In terms of philosophy...it is hard to tell, but many animals have a sense of fairness.