Delegates Vs. Notifications in iPhoneOS

Question

I am trying to call a method in my root view controller from a child view controller such that when I change my options they will automatically update the root view, which w

Answer 1

Is it really necessary for your root view controller to know about the changes, or just the subviews?

If the root controller does not have to know, having the settings send out the notifications the other views are looking for seems like a better answer to me, as it simplifies code. There is no need to introduce more complexity than you have to.