3 ms·
Separating two things isn't necessarily expensive. Think of coin sorters that just use gravity and different sized holes.
by jonny_eh 3y ago
Separating two things isn't necessarily expensive. Think of coin sorters that just use gravity and different sized holes.
- 4rt 3y agoYou still have to lift all the coins.
- jonny_eh 3y agoSlide the coins off the table into the sorter, done!
- 11101010001100 3y agoYou need to bring the coins uphill in the first place.
- tshaddox 3y agoRight, but that’s easy. If desalination only required lifting each unit of water a few inches we probably wouldn’t say it’s particularly difficult.
- 11101010001100 3y agoEasy as in moving mass against a gravitational potential? Didn't know building a rocket was easy.
- WJW 3y agoMoving water against a gravitational potential has been done for literal millennia and no rocketry is required. A water pump will suffice.
- jonny_eh 3y agoMy point is, we shouldn't assume that fighting entropy isn't necessarily expensive. There's always a cost, and it may in fact be high, but we shouldn't assume it is.