On that same subject, I'd say there are rather few "large programs" that "run into billions of lines" (of code, I presume). By comparison the Linux kernel, one

On that same subject, I'd say there are rather few "large programs" that "run into billions of lines" (of code, I presume). By comparison the Linux kernel, one of the largest monolithic "programs" I know of, would have to expand by almost two orders of magnitude to fit into that category. :)