William E. Byrd is a Postdoctoral Researcher at the U Combinator language research group at the University of Utah. He is co-author of The Little Schemer, and co-designer of several declarative languages: miniKanren (logic programing), Harlan (GPU programming), and Kanor (cluster programming). His StarCraft 2 handle is 'Rojex' (character code 715).

Daniel P. Friedman is Professor of Computer Science at Indiana University. He is co-author of The Little Schemer, The Seasoned Schemer, The Reasoned Schemer, The Little MLer, A Little Java: A Few Patterns, Scheme and the Art of Programming, and Essentials of Programming Languages, 3rd Edition, all published by MIT Press.

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