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A Jew took his Passover lunch to eat outside in the park. He sat down on a bench and began eating. Shortly thereafter a blind man came by and sat down next to him. Feeling neighborly, the Jew offered a sheet of matzoh to the blind man. The blind man ran his fingers over the matzoh for a minute, and exclaimed, "Who wrote this?" It seems a group of leading medical people have published data that indicates that seder participants should...