I am indebted to conversations and/or improvisations with Maryann Amacher, John Amuedo, Betty Dexter, Harlan Ellison, Edward Fredkin, Bernard Greenberg, Danny Hillis, Douglas Hofstadter, William Kornfeld, Andor Kovach, David Levitt, Tod Machover, Charlotte Minsky, Curt Roads, Gloria Rudisch, Frederic Rzewski, and Stephen Smoliar.
This article is in memory of Irving Fine.