I actually had a professor who told us to use comments to keep a track of working code ie. If changing a file comment out the working code so that if it fails you can access the previous versions. I mentioned using Version control for that and he just looked at me confused..

And changing every f***ing setting in your network manager in the process

http://catb.org/esr/writings/...

Basically windows doesn't have an overarching philosophy, which leads to inconsistencies. Esr explains it better in the link above.

A test a day keeps the bugs away

Source code Pro for powerline