Roscoe Mitchell

It wasn't until I got out of the Army and I heard Coltrane's record 'Coltrane,' when he was doing 'Inch Worm' and 'Out of This World,' that I thought, 'Oh my God, you can do that?' And then I thought, 'OK, I better go back and listen to Eric Dolphy a bit.' And then I said, 'Hmm, I better pull out these Ornette Coleman records.'

Frankly, as much as I love to improvise, it hasn't been difficult to stick to the script on 'Mad Men.' The writing is so precise, and the story so carefully crafted, that I don't think there's room - or need - for ad libbing. I could never come up with dialogue as lovely as these writers do, anyway.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.