Dr Paul Allen

Aparelho de ar condicionado (Photo credit: Wikipedia ) Jewish law forbids work on the Sabbath, but the question that has always plagued law-keepers is this: what actually constitutes work? Many modern interpretations of the law state that using an electrical button on the Sabbath constitutes work. Pressing a button closes an electrical switch and the closing of the switch is interpreted as "building" a circuit. Any kind of building on the Sabbath is strictly forbidden by the law. For that reason, many of the apartment buildings in this area use a feature in their elevators known as " Shabbat [Sabbath] service." Sabbath service removes the need to press buttons. When the service is engaged, the elevator will either stop at every floor on both the way up and the way down, or it will rise to the top and then stop at every floor on the way down. In either case, the sanctity of the Sabbath is maintained. (Wikipedia's article on  Shabbat service  is fascinati