esmenet | This is a good comparision.

"In this way, religion is sort of like Microsoft Windows. Windows puts the user interface, the kernel, the application libraries, and many other things all in one package. Linux has all of the things separated. Thus, someone coming from Windows has a hard time understanding that KDE and Gnome aren't operating systems. Both these computers are running Linux, but they are so completely different! Non thinking people have a hard time dealing with it when you apply the same label to things that are dissimilar."

Apreche (Scott), http://forum.frontrowcrew.com/comments.php?DiscussionID=5743&page=1#Item_0