"I've always hated this argument.
Banning efficiency, of all things, seems counterproductive."
Counter-argument: For many thing the efficiency of enforceability is built into the penalty structure. "The public" accepts - more or less - the current penalties for speeding/parking/general traffic offences. This is in spite of the fact that most of us "speed" when we consider it safe/appropriate, that most of us will stop in a no parking zone briefly if we think we aren't going to inconvenience anybody, that we'll use our better judgement at stop signs or merge lanes or double lines and obstructed roads.
If someone proposed a "better 'cause it's _more efficient_" means of enforcing road rules, where every single infraction was immediately deducted from your bank account - we (the people) would rightly push back and demand a reconsideration of what an "infraction" is, and how much the penalty for an infraction cost. And, indeed, whether implementing such a "super efficient" system is what anybody wants.
Super efficient surveillance is similar. It's now possible in ways that it never was when we wrote the laws regulating it. If you take out a camera and shoot a few shots in a park, you might get a few odd glances, but you're unlikely to get asked to stop unless you're being creepy. If you stand outside schools and take photographs of every child arriving and leaving you'd rightly expect to get asked to explain who you are, what you're doing, and where those photos are going to end up. Even if you're a cop or FBI/NSA operative, I'd expect you to get asked about what case you're working on, who's supervising it, and what probable cause you have to justify invading the privacy of every schoolchild at this school.
These days, it's clear that shopping mall and store security cameras, and wifi base stations sniffing phone wifi IDs, are capable of collecting - and with very little doubt actually collecting right now - much more detailed and accurate data about individuals (including the "think of the children" example earlier - these systems don't discriminate about all the kids hanging out in shopping malls).
Who's being held responsible for that data? Who's tapping the guy with the harddrives full of images and cellphone ID's on the shoulder and saying "Hang on, who are you? On who's authority are you collecting all these images and IDs? Where are they going to end up? Who's signed up to accept legal/financial responsibility if this data is misused or stolen?" Why isn't he being treated with the same suspicion as the guy outside the school with the camera?