Modern UIs are also almost impossible for elderly people to use, precisely because the common sense notions of ‘button’ and ‘scrollbar’ and such are frowned upon and have been all but banished. Ironically, iOS is full of obscure hidden controls and options despite the Macintosh being one of the greatest examples of intuitive UI design ever — which might actually be even harder to appreciate in hindsight given that it set the standard in so many ways.