If we're on the subject of citing sources, what are your sources for saying that: > the thesis is 100% incorrect and guessing that: > Facebook is crawling ev

If we're on the subject of citing sources, what are your sources for saying that: > the thesis is 100% incorrect and guessing that: > Facebook is crawling every piece of data possible (pictures, messages, etc) and then draws conclusions of my interests there. In addition to this, all FB user info is being hashed and compared against consumer spending data That's a pretty sweeping statement. You'd be surprised at how naive (and distinctly not-amazing) the machine learning algorithms used in-production at places like Facebook can be (in-production, as opposed to cool research papers that aren't actually used in-production). Going off of your simplified example, there are tons of contexts in which someone might say "run" without meaning anything related to the athletic activity. That's the definition of shitty targeting (false positive).