It just so happens that The New Yorker is also a thing that I enjoy very much. The magazine has published many covers drawn by well-known comic book artists - R. Crumb the aforementioned Spiegelman are but two - and Mouly talks about the recently released book Blown Covers, a selection of New Yorker cover illustrations that never made it. She explains why she wanted to publish illustrations that were never supposed to see the light of day:
"...when you see the enormous work that goes into refining ideas - once they are found - and search for ideas, then you realize the phenomenal work that goes into this distilled result. I think the insight into that process of the artist looking for ideas is an insight into the creative process."
It's a good episode, and if you're a comic book fan I'm sure you'd enjoy some of the other interviews Walker has with other comic book legends from the "Comics, Philosophy and Practice" conference. You can find the episode here.