Definitely. They have logic that links data sets, all it takes is one slip up for them to know youre the same person, probably with levels of probability about whether you are the same person.
Given the amount of data they possess, if I were in your shoes, I'd assume that yes. Every single service, app, etc owned by them is more than likely to be used to create the most accurate profile about you.
Agreed. What might have been more informative would be to have instead sent them each other's profiles (or all the same profile) and see if they rated them as accurately when applied to themselves.
It's imortant to keep in mind that metadata alone says a lot about a person. Combine that with more precise data from a few people in the same set and you can end up with very accurate data about everybody.
I would extend this to include companies like Facebook that study your data to derive deeper insights about you. I want to be entitled to every conclusion they reach about me from my own data, so I can correct whatever assumptions they have about me and possibly learn more about myself.
The idea of some sort of big data / semantic analysis being used to judge my worth is honestly rather reassuring compared to the idea of some hr drone trolling google for my name. A person is likely to unfairly misjudge you based on what they find online, an algorithm is probably a pretty fair judge of character, or if it isn't it isn't going to get used.
Though the information is also valid to all the folks in the photo who aren't you. Hence they are discovering information about people who have not offered information nor consent to this algorithm.
No. If the information is not about the individual, then it isn't useful in evaluating the individual. I know that sounds tautological, but it seems that obvious.
So you're asserting that marketing companies know people better than they know themselves? If that's true, that's incredibly damning of marketing companies and is a great argument for why they should have access to less individualized data about people.
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