community's position on use of modern conveniences are: The belief that in order to enter the Kingdom of God, they must live apart from the "world", or the unreformed. Avoiding "worldly" behaviors that pull their attention and intentions away from their religious community. Orthodox and Conservative Judaism For Orthodox and Conservative Jews, Shabbat is the seventh day of the Jewish week and is a day of rest in Judaism. Shabbat is observed from a few minutes before sunset on Friday evening until a few minutes after the appearance of three stars in the sky on Saturday night. On Shabbat, Jews recall the Genesis creation narrative describing God creating the Heavens and the Earth in six days and resting on the seventh. It also recalls the giving of the Torah at Mount Sinai, when God commanded the Israelite nation to observe the seventh day and keep it holy. Shabbat is considered a festive day, when a Jew is freed from the regular labors of everyday life, can contemplate the spiritual aspects of life, and can spend time with family. Orthodox and some Conservative authorities rule that there are 39 prohibited activities of work (referred to as "melakhot"), such as turning electric devices on or off, driving cars, and more, during the Shabbat, as listed in Mishnah Tractate Shabbat. Consequences There are many ramifications of the development of modern conveniences for individuals and their families over the past 150 or more years. The many labor-saving devices have kept pace with growing houses and furnishings and allow for greater leisure. There are also some negative effects, some of which are also as the result of advancements in chemical technology in the food that we eat or products that we use. In these cases there are also conflicting opinions about the extent to which some of the products are harmful. Here are a few examples of positive and negative effects of modern conveniences. Positive effects Health care Some of the major improvements over the past century has been in improved health care. For example, modern medicine has made leaps in preventing infectious diseases in part due to improved water and sewage treatment. This is obvious in the marked rises in life expectancy. Technological advancement in underdeveloped countries Some of the most dramatic technological benefits are seen in underdeveloped countries. For instance, cabling for landline telephone service is expensive and requires a lot of time