> Does the person who has read absolutely everything about love, know what it feels like to love?
No, but Mary knows much more than that. By hypothesis, Mary has complete knowledge of all physical facts. That is vastly more knowledge than a person can gain by reading "absolutely everything" about anything.
One big problem with the thought experiment is that the premise is so outlandish that almost nobody is willing to use it as given in their reasoning, including Jackson himself. Instead they substitute some vastly weaker premise and ignore the vast difference in implications.
No, but Mary knows much more than that. By hypothesis, Mary has complete knowledge of all physical facts. That is vastly more knowledge than a person can gain by reading "absolutely everything" about anything.
One big problem with the thought experiment is that the premise is so outlandish that almost nobody is willing to use it as given in their reasoning, including Jackson himself. Instead they substitute some vastly weaker premise and ignore the vast difference in implications.