Perhaps the most enigmatic of Purim's mitzvos is "ad d'lo yadah". Aside from the obligation of drinking one's self into a stupor being the antithesis of Yiddishkeit, what is its purpose? As we delve deeper into Haman's genocidal plan and how the Ribbono Shel Olam "turned it all around", we gain new insight not only into the eternal change that Purim wrought, but what we are attempting to experience as we enjoy Seudas Purim.