Rich at least accepts the first definition. As far as he's aware, besides his whole... supercomputer in his brain thing, he is very much a normal human being. The rest of the definition though...

"I think that sort of makes sense... aside from how someone loses their heart. And I guess what a shadow is, if not the body, if that's the Nobody." He gives a wry smile, though. "I get it if you can't explain it, though. Sometimes worlds are just plain weird. I don't have all the science to know what was going on in mine, either."