This makes no sense to me. Obviously it's possible to be human and not be able to create art (a baby is human but can't create art). And I see no theoretical reason why something couldn't create art and yet not be human, such as some kind of intelligent alien. So I don't see where you get the idea that art-creation is a definition of humanity, although no doubt it is, in general, a characteristic of it.
I was speaking of our species as opposed to any others. As you said, a newborn human can't appreciate art, but it will when it grows up.
I hadn't considered theoretical species like extraterrestrials. My response was refering to known species.
I should probably have been more specific & said that art was a defining characteristic of our species. I didn't mean that art is the entire definition of us.
A deaf person can be literate without being able to hear music, so again, I don't see the connection.
Again, I was speaking of our species as a whole. A healthy human adult can appreciate art. The deaf can learn about music through feeling the sound vibrations or electronically converting sound into light. Mozart was very deaf IIRC. A better example for you might be someone in a coma, but, again, I wasn't speaking of unusual circumstances within humanity. I was speaking of our species as opposed to others.
I was also trying to point out that music is a form of art & that humans require literacy for very complex music. By asking about art in question #1, music in question #2 & literacy in question #3, carmen510 didn't seem to understand that.
Unless of course he means "history" in the sense of "what happened"!
I know, but that's not what history means.
Now I'd agree with you here. You might as well ask how history would have been different if we'd all been eighteen-foot tall lizards. The imagined situation is so radically different from the actual one that it's unanswerable.
That's the point I was trying to get across to carmen510.
Okay, so pretend all humans were blind and deaf, how would history be affected?
We'd be extinct. Actually, without sight or hearing, we'd have never even evolved to Homo sapien sapien. Without sight & hearing, we'd need a fantastic sense of smell & touch & we'd be forced to live underground like moles to avoid predators.
The more interesting question to me is: why are you asking this? Unless you're looking for responses for a philosphical essay assignment in school, I've been caught feeding a troll...