Part of the source code to Windows 2000 had been leaked onto the Internet before, and pretty it was not. Microsoft’s flagship product turned out to be a vast sprawl of spaghetti in Assembly, C and C++, all held together with sticky tape and paper clips. The source code files contained many now-infamous comments including “We are morons” and “If you change tabs to spaces, you will be killed! Doing so f***s the build process”.