Orthodox Judaism resists innovation in the interpretation of halacha, traditional Jewish law, and considers halacha to be binding on all Jews. In practice, this is most visible in the role of women. Women and men sit separately in Orthodox services and women do not lead services when men are present. Orthodox Jewish interpretation of halacha considers the act of switching on or off an electric light (or any other electrical circuit) to be forbidden work on the Sabbath, so Orthodox Jews avoid using any electrical technology on the Sabbath, including computers and telephones. In contrast, all of the liberal branches of Judaism, the Conservative and Reform movements being the largest, allow mixed worship, ordain women as rabbis, and allow the use of electricity on the Sabbath.Some people poin