The article claims 2 billion lines of code across 25000 engineers, which boils down to 80k lines of code per engineer. I'm not sure what to think about that. I

The article claims 2 billion lines of code across 25000 engineers, which boils down to 80k lines of code per engineer. I'm not sure what to think about that. It seems to be in a reasonable order of magnitude for C++/Java-type languages compared to projects that I have seen, but it does imply a significant chunk of code that is not actively being worked on for a long time (which is not necessarily a bad thing - don't change a running system and all that).