At times in its history, the NSA had achieved something like a God’s-eye view of its targets on their specialized communications channels. Now, with the same goal, the agency wanted something it had never had before: efficient means to read and listen to anything on any channel at all. My instincts rebelled against a too-efficient state on this scale of operations. I worried about the Dark Mirror, so transparent on one side and so opaque on the other. The power gradient of government to citizens became too steep.
