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Bill Powers is an inventor, astronomer, computer systems designer, author, and, most importantly, a brilliant theorist in the advanced study of behavior, from the physics of a cell to the interactions of a community. He received a B.S. in physics and did his graduate work in psychology at Northwestern University, where he worked in the Department of Astronomy, and provided consulting to The Center for the Teaching Profession. His work in medical physics planted the seeds for his long-term investigation into control theory. Powers holds patents for a number of inventions, from electronic instruments to a beautifully conceived strategy game.