명언

Owe your banker £1000 and you are at his mercy; owe him £1 million and the position is reversed.
- John Maynard Keynes
은행에서 1000파운드를 빌리면 은행이 나를 좌우하지만, 100만파운드를 빌리면 내가 은행을 좌우하게 된다

https://en.wikiquote.org/wiki/John_Maynard_Keynes

Backpropagation

A Step by Step Backpropagation Example

http://mattmazur.com/2015/03/17/a-step-by-step-backpropagation-example/