Of course it's hard to define. That doesn't mean every definition is valid. And often this comes up in the context of the Hard Problem, where a definition is clearly inadequate (dodging the problem and talking about something else) if it does not even try to point at qualia/subjective experience/what-it-is-like-to-be.
Of course it's hard to define. That doesn't mean every definition is valid. And often this comes up in the context of the Hard Problem, where a definition is clearly inadequate (dodging the problem and talking about something else) if it does not even try to point at qualia/subjective experience/what-it-is-like-to-be.