Found 2 comments on HN
scrabble · 2014-05-28 · Original thread
My understanding is that Raymond Chen ( http://blogs.msdn.com/b/oldnewthing/ ) was a huge part of ensuring that everything was backwards compatible. If you like that kind of thing, he's got a book: http://www.amazon.com/The-Old-New-Thing-Development/dp/03214...
bad_user · 2012-03-07 · Original thread

     which meant you could develop for XP and still
     run on Vista and vice versa
That's not the case. A lot of apps and drivers broke on Vista.

You should really go and read The Old New Thing, as it's really enlightening: http://amzn.to/wW0Okn

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