It was not I that downvoted you, but I agree with the down-voter in that you are not making good arguments. There is basically nothing in common with NULL as us

It was not I that downvoted you, but I agree with the down-voter in that you are not making good arguments. There is basically nothing in common with NULL as used by programming languages in general compared to how you want to define it in your comment. How NULL is represented internally, is totally language dependent. C and its ilk has defined it one way (that is reasonably close to your description ON SOME ARCHITECTURES - not all), but how other languages define it differ wildly. And strings may only grow if strings are mutable, which AGAIN is extremely language dependent.