Your arithmetic you mean? MS...1975.
Win. ACLs is FAR superior to *nix-like systems, so your "crude" is also the wrong. If anything it is far too sophisticated - to the point where I would argue it is unusable. Unless one is setting ACL's every minute of the day, then not doing it, for a 2 week hol., and you have to damn near re-learn it. I can still set *nix security same as I did in 1993 - and get what I set. Play with Win. ACL and it's a gamble that you get what you want. I suspect you do not like Win. security because you do not understand it - but then, not many people do.