This is the impression that I took away from his remarks, too. However, this prompts a question: is it feasible to capture everything, store those data, and fi

This is the impression that I took away from his remarks, too. However, this prompts a question: is it feasible to capture everything, store those data, and filter after the fact? How much traffic are we discussing, how much storage over what period, etc.? The costs to capture and store everything for any significant length of time seem astronomical; am I wrong? And if it's not everything, how useful is it?