I know you're a human, therefore I know you cannot know what it's like to be a bat, as an objective fact, regardless of how you think you think subjectively.
> who objectively knows what it's like to be a bat.
Sigh. Thinking you know and knowing is not the same, especially thinking you "objectively" know something. Maybe you should read the article posted instead of commenting these sorts of sentences.
I've read it many times over the years. I objectively know what it is like to be a bat and you cannot claim I don't without claiming you objectively know what it is like to be me.
If this frustrates you, then congratulations; we have a starting point for discussion. Be open to describing where that frustration originates.