This talk by @ugomatic gives me an angle I hadn't previously considered regarding IoT ethics: the environmental impact of 50 billion devices
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It's enormous & getting bigger. BTC, which is the largest PoW-based bc, is projected to use 14 GW in 2020 (~Denmark's total power usage).
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A good read from IEEE Spectrum last month:https://spectrum.ieee.org/energy/policy/the-ridiculous-amount-of-energy-it-takes-to-run-bitcoin …
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