[amypetrik8]

> public static function words(string $document): array {

>, though is verbose, at least means something

I disagree, it is hardly verbose. there can be further detailing of the input and return value of the function beyond a simple type. Java didn't go far enough, not by a long shot - we need hardcore painstaking, completely brutal typing. Such typing will be highly beneficial for software reliability - you're not against reliability are you?