In an MTV town meeting yesterday in Ann Arbor, Mich., Al Gore said that after long deliberation he had sided with paper bags over plastic, more out of personal preference than solid scientific evidence that plastic was worse for the environment. On a more serious note, one student tempted to vote for Ralph Nader in the presidential race asked Gore to “assure me that a vote for Al Gore is a conscientious vote, not simply a vote for the lesser of two evils.” Gore responded, “I want you to vote your heart, but I want to convince you,” and pointed to his environmental stances, as well as his support for consumer protections, as reasons to support him.