Making POW useful requires nothing more a than changing the mindset. There are many situations where the heat produced has more value than the electricity consumed. Ever used electricity to produce heat? If the objective is to use electricity to produce heat, then POW mining of crypto currency becomes simply a way to reduce costs.
Once and for all, you are irrefutably rebutted:
Specialization enables economies-of-scale.
An example of an erroneous posited caveat[4] that proof-of-work mining resources would not become power-law distribution centralized due to the posited high electrical cost of dissipating heat in centralized mining farms coupled with the posited free electricity cost of using the “waste” heat of ASIC mining equipment as space heaters, is (in hindsight) incorrect because:
- Two-phase immersion cooling is 4000 times more efficient at removing heat from high-power density data centers[5], reducing the 30 - 50% electricity overhead to 1%[6].
- Electricity proximate to hydroelectric generation or subsidized electriciy costs approximately 50 - 75% less than the average electricity cost.
- Heating is rarely needed year-round, 24 hours daily, at full output. Not running mining hardware at full output continuously renders its purchase cost depreciation much less economic because the systemic hashrate is always increasing and (because) ASIC efficiency is always increasing[7]. The posited purchase of obsolete mining equipment[8] is incorrect because mining rewards from obsolete hardware are commensurately lower so the depreciation is not proportionally reduced. To make it profitable enough to be worthwhile (to justify the pita of jerry–rigging a space heater for equipment not designed for the purpose) requires running so many 10s or 100s of kWH of relatively much less efficient (i.e. obsolete) hardware generating more heat than can be typically utilized (unless infernos are in sufficient decentralized demand).
[4] https://blog.ethereum.org/2014/06/19/mining/
[5] http://www.allied-control.com/immersion-cooling
[6] http://www.allied-control.com/publications/Analysis_of_Large-Scale_Bitcoin_Mining_Operations.pdf#page=9
[7] https://www.reddit.com/r/Bitcoin/comments/335107/i_am_thinking_of_using_a_bitcoin_miner_to_heat_my/
[8] | https://bitcointalksearch.org/topic/m.10109255 https://bitcointalksearch.org/topic/m.16816538 |