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"I'm an ex-Facebook exec: don't believe what they tell you about ads." https://www.theguardian.com/technology/2017/may/02/facebook-executive-advertising-data-comment
@yellowfrog
"Let’s assume Facebook does target ads at depressed teens. My reaction? So what. Sometimes data behaves unethically."
No it doesn't. Data is just data. How (or if) humans choose to use data is where ethics come into play. If data "behaves unethically" it's because a human made a decision to use it in an unethical way.