Does Santa Exist?By: Eric Kaplan Metaphysics isn't ordinarily much of a laughing matter. But in the hands of acclaimed comedy writer and scholar Eric Kaplan, a search for the truth about old St. Nick becomes a deeply insightful, laugh out loud discussion of the way some things exist but may not really be there. Just like Santa and his reindeer. Even after we outgrow the jolly fellow, the essential paradox persists: There are some things we dearly believe in that are