“Oh sure, I studied with him at Harvard”
"Actually, I read his book when it was in galleys…
I bought it when it came out in paperback…
I have it but never actually read it…
I read a few blog posts he wrote about it…
I scanned the reviews, did you see the one that really excoriated him?
I followed a link on Facebook…
I read a tweet about it.
…Who?"
What level of exposure counts as actually knowing?
For me, doing is at the core of it. If you've done something with what you've learned, then maybe you know it.