An "Any type" is optional typing if you don't need to downcast it in order to use it, like the "any" type in TypeScript and Flow. If the "Any" type is just a t

An "Any type" is optional typing if you don't need to downcast it in order to use it, like the "any" type in TypeScript and Flow. If the "Any" type is just a top type but you have to downcast it to use it, like in Kotlin, then it's not considered optional typing, since you still have to talk about types ;).