Ken Iverson was denied tenure at Harvard in 1959,went to IBM Research, and won the Turing award in 1979. http://keiapl.info/anec/#one_little_bookEdsger Dijkstra was denied tenure at Amsterdam in 1970,went to UT Austin, and won the Turing award in 1972.http://www.cbi.umn.edu/oh/pdf.phtml?id=317 page 12Stephen Cook was denied tenure at UC Berkeley in 1970,went to the University of Toronto, and won the Turing award in 1983.http://www.cbi.umn.edu/oh/pdf.phtml?id=317 page 12