Silver Chair, Polygamy, and Mount Sinai

Rabbi Gershom ben Yehuda, widely known as Rabbeinu (our teacher) Gershom, lived in 10th century. He can’t really be called a Renaissance man, since he pre-dated Renaissance by a couple of centuries, so let’s call him a pre-Renaissance man. Like some other medieval Jewish scholars, he was also a scientist, a mathematician, a physician, and as a…