> As long as conversion between representations is well-defined and not hugely surprising, what does it matter? In Javascript: let a = '0'; a == !a; /

> As long as conversion between representations is well-defined and not hugely surprising, what does it matter? In Javascript: let a = '0'; a == !a; // True. Why? let b = !a; (a == b) == (!a == !b) // False. Why? None of the coercions involved is particularly surprising, but the result most definitely is.