After college, Jack obtained MD and PhD degrees from Ohio State and then practiced emergency medicine for about 20 years, from which he retired in 2003. In the late 1990's, Jack obtained a law degree, which he uses primarily in connection with running his apartment business. Jack has been interested in alternative energy for decades and in 2005, installed an 8KW PV system and a solar hot-water-system to yield an almost-carbon-neutral house. He has no formal financial training but has been a stock investor for more than two decades.