As he got deeper into it he began to run into a lot of mathematics, which he had to work out with a pencil… — Lev Grossman
As he got deeper into it he began to run into a lot of mathematics, which he had to work out with a pencil and paper—you couldn’t do magical equations with computers, they just spat out inconsistent answers before hanging completely. Magical math had to be thought through with a brain.
p. 44Source: Wikiquote · CC BY-SA 4.0
