> I am actually dealing with a person though, and have set out a falsifiable case.

As have they? We have many tests for determining whether or not a given person's senses are or not intact.

> Same, but it's also true for anyone else.

Note I said show. If you happen to live in a world where you feel you've been devoid of such empathy then I feel for you, but such an environment of narcissism is hardly representative.