Shifts In Technology
There have been great shifts in technology -- some of which people are not really aware of yet. An example is lighting. One can now light a home with 10% of the power that one needed even recently. This also means that one doesn't need the mains any more for lighting. OBSERVATION: One doesn't need the mains for anything in fact, but this is about what is practical. The bulb is a new-tech bulb in my home.
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