Tom was also a mathematical lecturer. "In 2001, Lehrer taught his last mathematics class, on the topic of infinity, and retired from academia.[21] He has remai

Tom was also a mathematical lecturer. "In 2001, Lehrer taught his last mathematics class, on the topic of infinity, and retired from academia.[21] He has remained in the area, and in 2003 said he still "hangs out" around the University of California, Santa Cruz." via Wikipedia.