Because the permissions often don't work as the users expect them to work. See this earlier thread for what I mean: https://news.ycombinator.com/item?id=166702

Because the permissions often don't work as the users expect them to work. See this earlier thread for what I mean: https://news.ycombinator.com/item?id=16670291 https://news.ycombinator.com/item?id=16670291