The student union at Oaksterdam University in downtown Oakland was buzzing yesterday afternoon as several dozen people gathered together with Marijuana is Safer authors Paul Armentano of NORML and Mason Tvert of SAFER to celebrate the brand new book's release. (Co-author Steve Fox of MPP was on the East Coast. The book also boasts a foreword by Norm Stamper, the former police chief of Seattle.) After an hour or so of schmoozing, book selling, and signing, Armentano and Tvert were joined by Oaksterdam's Greg Grimala for an informal discussion about the book, whose thesis--that marijuana is safer than alcohol--is an outgrowth of work originally done by Tvert as he organized college campuses around the issue of inequality in punishments for students got smoking pot as opposing to underage drinking. Armentano, who has been keeping a keen eye on marijuana research for years, supplies much of the hard science. "The fact that we're even having this discussion is a measure of marijuana's relative harmlessness," Tvert pointed out, adding that he thought the alcohol vs. marijuana comparison was an excellent tactic. "Parents can understand alcohol, and we can make the comparison between it and marijuana. Within that framework, you get them to start thinking about marijuana the same way they think of alcohol. The discussion of alcohol provides a reference point, and that will only further the debate." Tvert will be hitting the road to promote the book in coming weeks. Armentano said yesterday the book was shipping to bookstores in the East now and would be showing up on the West Coast soon. He also said he had directed that a review copy be sent to StoptheDrugWar.org, so look for a book review here next week. (The Chronicle is on vacation this week.) Tvert, Armentano, Grimala