alt Hacker News"A former senior U.S. intelligence agent described Alexander's program: "Rather than look for a single needle in the haystack, his approach was, 'Let's collect the whole haystack. Collect it all, tag it, store it ... And whatever it is you want, you go searching for it.""
https://en.wikipedia.org/wiki/Keith_B._Alexander#NSA_appoint...
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What you're describing is a program from 20 years ago design to surveil limited parties in a limited geographic region overseas, during a war, in a place that enjoyed Stone Age information systems. That is not in the sense that the people in this discussion meant by blanket surveillance. They are talking about broad interception of all communications by U.S. persons, an undertaking that it should be obvious to you if you are in this industry would be economically if not thermodynamically impossible.
Yes, and this is the only feasible approach given the huge technical advances in communications over the past few decades.