. . . "The human brain is built so that when given the slightest hint that something is even vaguely social, or vaguely human ??? in this case, it was just answering questions; it didn't have a face on the screen, it didn't have a voice ??? but given the slightest hint of humanness, people will respond with an enormous array of social responses including, in this case, reciprocating and retaliating." .