4 ms·

It's kind of like knowing multiplication tables, or intervals in music. There's some stuff you just gotta know.

• minot 6y ago
  Knowing the multiplication table is such steaming nonsense. I know 7x10 is 70 so half of that, 7x5 is 35. I can add seven to 35 fast enough that I don't have to memorize 7x6 is 42. Memorizing is not knowing.
  • hashkb 6y ago
    How did you divide 70 in half and get 35?