Tamara, I took some time to process the plural form of knowledge as well! When submitting the proposal Liz even had to point out that this wasn't a typing error.
Using the word knowledges also reminds us that we shouldn't be so quick to accept the information and knowledge passed down to us. We should constantly question and assess what people claim to know, and even what people claim we should know.
I was so sorry to have missed the conference! You'll have to all fill me in on the highlights.
Sylvia