Thanks, Andrew. We may not agree, but I have a lot of respect for your ability to deal with ideas.
Here's something those who think telephone metadata tracking is invasive ought to consider: What the NSA was doing -- not always as well as one might hope -- was trying to prevent another 9/11. If, because we've shut down the "invasive" pursuit of metadata correlations by the NSA, we have another 9/11, two things are almost certainly going to be true: (1) The destruction will be much more extensive than the destruction associated with 9/11, and (2) There'll be an overwhelming demand by the people of our country for much more invasive data tracking than anything we've seen to date. The requirement to take a suspicious metadata correlation before a judge before NSA people are allowed to listen to conversations will fall away. In the end, we'll all lose a lot more privacy than we were losing as a result of previous metadata tracking.
It's worth thinking about.