"Linux is not a free version of Windows. The two systems differ
not only visually, in the graphical user interface the user sees,
but also functionally, as is frequently discussed, and legally to
boot, which is constantly emphasized by the Free software
community. The differences between them are so fundamental that
drawing a comparison between them is nearly impossible. There are
so many moot points that they could make up a very long list.
"This part of my article concerns the architectures of Windows
systems. The systems themselves are baffling ones, to put it
mildly, but to know them is more than a necessity..."