True, but we are the ones creating the AI. I suspect a programmer that only has access to human thinking would leave their mark upon any such machine.

And, since we WANT something that can relate to us, we must test its capacity for human-like behavior.

An AI that can only relate to intelligent fungi from some far-off star would be absolutely useless to us, and would likely find us equally useless. No common ground would mean no need for contact or commerce. At the risk of sounding a lil' Ferengi, I want a machine intelligence I can do business with.