". I also try to keep in mind that I'm not typical. ... So when I judge a UI I literally stick my Mom on it... she's 68"

Well she no more typical a computer user than you are I would think. I like to see a curve of typical computer users age distribution (but I understand it would be a little skewed if it's hard for the older generations to use computers).

I feel that ribbon is designed for a select group of new users who need that kind of help. And I hope it's easy to disable it. It's fine for Microsoft to use something like this as a default mode as long as power users are able to turn that stuff off.

This is what turns me off on OS X, there is often no way to do certain more advanced things. Or it's hidden so well it requires hours of searching on the web for what plist to modify.