doesn't usually have op-ed type pieces in which a reluctant talk was made by a man i respect, david remn inkck, i didn't want to become the new yorker's art spiegelman which made me restless to a degree. maybe there was something of i've done this i don't want to keep doing it. part of it was at that moment i really needed to make pages about being stuck in september 11th, 2001. >> i want to talk a little bit more about process when we come back. >> okay. >> no doubt about it, innovation changes our lives. opening doors ... opening possibilities. taking the impossible from lab ... to life. on techknow, our scientists bring you a sneak-peak of the future, and take you behind the scenes at our evolving world. techknow - ideas, invention, life. on al jazeera america >> welcome back i'm john siegenthaler. my guest today is comic artist art spiegelman. let me ask you about the process. how do you start creating let's say a cover, or some sort of work that you know, do you start with a drawing? >> well, often it's from a concept rather than a drawing. but what i mean by that is, it related to someth