More than that really. If every stranger who sees you on the street can (or worse, automatically does) instantly share that they saw you to a giant database tha

More than that really. If every stranger who sees you on the street can (or worse, automatically does) instantly share that they saw you to a giant database that can then be easily searched it changes the act of "seeing". Now you can be virtually followed at any time by anyone anywhere who can use the database. No one can be drowned by a raindrop. A flood is another matter.