QED wrote:...it made me wonder what might happen after many more generations of human/ape interactions. Given that there is evidence of "cultural transmission" from ape to ape, we might witness an acceleration of evolution taking place. After all, we make excellent teachers and have access to a wide range of technology to assist with the development of ape communication.
I'm glad I reread this thread. Your quote reminds me of something I heard or read once (or at least recall doing so) about housecats - they don't meow around each other like they do around humans. Meows of pain or warning are expressed by cats outside of human influence, as do plaintive meows like those for hunger or general displeasure, but as a cat owner, I think "feed me," "water me," "pet me," "where's my toy mouse darnit!" are expressed differently than their more primieval utterances.
And in a sad but delicious anti-tangent, Koko was observed mourning for her first kitten - All Ball - by crying alone after Dr. Penny told her about the accident that claimed All Ball's life.
Expressing emotion and communication via "speech" and physiologocal response beyond simple facial expression seems to be exhibited in many mammal species beyond humans. If our "heart" is actually in our soul, then why do non-human, and ostensibly non-souled mammals exhibit such traits?