![]() Lighting has gotten much more efficient over time we can squeeze out a lot more photons per unit of energy from a 2012 CFL or LED than a candle could in 1780, or a lightbulb could in 1950. Now we have machines that work easily with simple timekeeping rules, and it's more beneficial to spend a small amount on energy for lighting, and save the larger cost of engineering things to work with the complex timekeeping rules, as well as saving the irritation to humans. I think seasonal shifting time made sense in the pre-electric past, when timekeeping was more flexible and artificial light was inefficient and often dangerous. ![]() Moving timescales add a lot of complexity to the implementation of timekeeping systems and have ( I think it should be fixed on either UTC standard or UTC+1 year around, with the current zone offsets.
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