Why not go further? In some old Fortran compilers, names of functions could be at most 6 characters long and I am not sure, if upper and lower case where disti

Why not go further? In some old Fortran compilers, names of functions could be at most 6 characters long and I am not sure, if upper and lower case where distinguished, I guess not. But with only lower case letters and digits, you roughly get 1.5 billion different names. That is a lot -- you will have a busy time to use them all! The only problem is, that the overhead remembering such names is huge, but it can be done! I still think, that in programming, managing complexity is key. You need different levels of simplification -- and here come modules in. Even when you want to use some kind of key-naming scheme without modules as described -- you at least will end up better of, when you use common prefixes to make life a little bit easier ... (and one could come up with the idea, calling the prefixes "module"). Beside that, modules bring other advantages into the game besides naming.