Alas, it seems the campaign for marijuana legalization will not be moving forward in 2010 after all. California's Proposition 19 - the proposal to legalize recreational marijuana use for those over 21 - was defeated on Tuesday, dashing the hopes of those who sought to use it as a platform to challenge bans elsewhere. It seems very likely that a majority of students support legalization. If you count yourself among this group, give yourself a pat on the back - you've reached the correct conclusion.But as in all matters, how you arrive at the correct conclusion is just as important as the fact that you arrive at the correct conclusion. Considering this, the pro-legalization crowd has been woefully inept. The legalization arguments have become largely predictable, but none of them offer a compelling reason to justify legalization and all of them foolishly concede far too much to those who favor prohibition - and in doing so, make the job of the prohibitionists that much easier. On Prop 19, as has so often been the case, proponents of legalization were their own worst enemies.