"Deleted the address, kept the coordinate pair" ;) The true reason is probably a little less cheeky: keeping track of copies is hard. And here we end or digres

"Deleted the address, kept the coordinate pair" ;) The true reason is probably a little less cheeky: keeping track of copies is hard. And here we end or digression into apologetics and return to criticism, ensuring correctness in keeping track of copies is surely not a very high priority.