Ask a Mac OS X fan or a Windows fan what the difference is between the two operating systems, and the short answer might be something like, “The difference is, the one I use doesn’t stink.” That response may underscore the emotional pull an operating system has with a particular sort of computer user, but it is not very helpful for getting at the heart of the matter. The long answer involves understanding the soul of each OS. A growing number computer users are finding favor with Mac OS X. What is it that makes up the real difference between OS X and Windows?