yootis··on There's never been a better time to go into math (by: 3blue1brown) [video]Going into math at this point is like buying a used crossword puzzle book.
yootis··on Waterless high-density hydro stores more energy with less elevationThe article says you get the same energy for 40% of the volume and 40% of the height. That’s not true, though. You can save 60% on one of those variables but not both. Otherwise you lose and extra 60%.