Medical Marijuana September 20, 2012 Irv Rosenfeld: A Pioneer Speaks Out Lakota It was during his freshman year of college in 1971 that Irv Rosenfeld gave in to peer pressure and tried marijuana. It didn’t get him high — it still doesn’t — but within a few weeks he realized after smoking that he’d been able to sit still for a half-hour while playing chess. Categories: Marijuana News, Medical Marijuana Tags: irv rosenfeld, Michigan. By: Lakota. Permalink: .