Previous discussion: https://news.ycombinator.com/item?id=19567011 https://news.ycombinator.com/item?id=19567011 And a quora link (sorry): https://www.quora.

Previous discussion: https://news.ycombinator.com/item?id=19567011 https://news.ycombinator.com/item?id=19567011 And a quora link (sorry): https://www.quora.com/If-floating-point-addition-isnt-associative-how-come-its-still-commutative-Whats-the-difference-that-makes-one-true-and-not-the-other https://www.quora.com/If-floating-point-addition-isnt-associ...