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> To be fair to Facebook, figuring these kinds of nuances out isn’t easy

God damn it, it is called ACLs. Not exactly a rocket, or even computer science.

The problem here is the picture was originally shared with someone who had permission to see it. That person then saved the file to their machine, and re-posted it to twitter.

That is not a technological problem.

The person who did all this was not supposed to see the original picture. The whole thing happened because of sharing, tagging and mutual friends. It is a technological problem.

Oh yeah, and ACLs are so easy to apply and maintain ....

Ironically, I first ready that abbreviation as CIA, which may be appropriate as well.

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