In all fairness, you shouldn't have to learn how to use a computer to the extent these companies force you to. It's why I've never taken to Linux. Apple usually have the right philosophy when it comes to the user experience, although Mountain Lion looks to be taking ideas from Apple's mobile devices instead, which is never good for a desktop OS, and I never approved of their policies or attitude towards consumers. I wouldn't say it's accurate to call the changes presumptions either because they aren't going to stick in features without a reason. I think the complaints come from being too used to what makes Windows "Windows".