http://shippingseven.blogspot.com/2008/01/registry.html to Read More
Well, looks interesting to me. I would agree, this is part of why Windows cannot move quickly, because it has to be compatible with older versions of software, so they have to make it backward compatible.
advapi32
apis
backwardcompatibility
change
compatibility
executable
hard disk
operating system
performance
programming
registry
software
system
user experience
windows