>Does it need to be 50 million lines of code? Probably not and they should try to reduce the size if it makes sense. However, if all of the OS's I listed are a

>Does it need to be 50 million lines of code? Probably not and they should try to reduce the size if it makes sense. However, if all of the OS's I listed are above 10 million lines even in the best case scenario a modern operating system isn't going to be anything less than an overwhelmingly large and complex program.