Language? Sentience?

What is it that makes us human? While we acknowledge that we are animals, vertebrates, mammals, what is it that separates us from the other animals? What sets us apart? Is it unique to us?

I don’t know the answers. And this video doesn’t answer them. But it raises those questions and so many more. The narrator is a little hokey, and I wish I’d been able to hear more from Dr. Savage-Rumbaugh, but it’s worth your time.