1973 Fair Information Practices:- You should know who has your personal data, what data they have, and how it is used.- You should be able to prevent information collected about you for one purpose from being used for others.- You should be able to correct inaccurate information about you.- Your data should be secure...while it's illegal to use Brad Pitt's image to sell a watch without his permission, Facebook is free to use your name to sell one to your friends.
Signals always point to something. In this sense, a signal is not a thing but a relationship. Data becomes useful knowledge of something that matters when it builds a bridge between a question and an answer. This connection is the signal.