Hey shanks. I also must plead ignorance as to the Chinese room thought experiment. A bit of a clue in would be nice.

There is a some important differences between connaître, savoir and comprendre. In the context we are discussing now...
Connaître means knowing more or less precisely.
Savoir means remembering in a way that you can repeat the knowledge.
Comprendre means understanding the subject or thing.

As to Jerry Fodor. True, we will never know what it is like to be a bat, but it is also true that we will know what it is to by any other person in the world. You can generalize or assume, but you can never know for sure.