Wired reports on an interesting appliance feature/design challenge
For decades, observant Jews have found ways to work around Sabbath restrictions in the kitchen. They taped down the button on the refrigerator door frame to keep the light from turning on. Or someone unscrewed the bulb before Friday sunset. They turned on an oven in advance - that way, they could warm food on the Sabbath without altering temperature settings. In recent years, however, well-intentioned appliance makers have been installing safety features that automatically shut off ovens after 12 hours. That meant a unit turned on at dusk Friday would be cold before lunch on Saturday. When companies learned this was complicating dinner preparation for some Jews, they supplied an optional override. Thus, a rudimentary 'Sabbath mode' was born. But as appliances got more high tech - gel-pad touch controls; LED screens with temperature and burner settings; digital humidity gauges - creating a Sabbath mode became more difficult.
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