The evidence offered by Edward Snowden, that you have been able to see, says very little about actual capability. And without context, we don't even know if it

The evidence offered by Edward Snowden, that you have been able to see, says very little about actual capability. And without context, we don't even know if it describes current or proposed capability. We don't even know if it was created by an NSA employee, and not e.g. a BAH contractor. So if we're going to be standing on some sort of epistemological high ground, let's make sure it's not quicksand beneath our feet.