Sorry for raising that impression about Trusted Surveillance, I know you've 'just' sketched a general concept of such a security system.
Your argumentation to soothe my security concerns sounds plausible, and from the scientific knowledge I was able to humbly assimilate up to now I'd support everything you say in your answer, and by the way I don't grok the mathemathics either, except for one thing.
A tiny little bug keeps gnawing at my synapses and leaves me with a not ignorable unease. That's where my silly brain (although it's probably in good company of I'd say 99+% of the full amount of human thought processors, including those of many physicists) hits a barrier - hard as I try, I can't predict how quantum computing will change the future of... well, the world in general, I suppose, in lack of a better explanation. We'll see isolated applications first, for special purposes like encryption and other mathematical equations. Quantum-maths, I wonder when that will reach the high-school curriculums - and admire everyone who understands that today.
There's a damn whole micro-world at the subatomic level which our brains just have no language for nowadays, and as long as we haven't found out how exactly the physical laws of relativity and quantum mechanics are interconnected, I'll not be certain about whether it's possible to speed up - read: compress - the real-time simulation of our universe. How can you be certain about that?
We're getting into deep water territory here, but whom better to ask in such a situation than a philosopher, so instead of writing a short article on my own blog - about recent medical research: heavy metal music could soon be prescribed by your medic and sold in pharmacies, big pharma complains about dropping profit from high blood-pressure pills..., umm no, that's too long for a teaser - I'll continue here and
Suggest that it is imaginable that, and I'll paint a mental picture here because that's easier than talking about the maths and physics, we live in a bubble universe together in a foam bath with infinite other universes. Each universe got blown up by a mechanism resembling a bubble-maker toy, and each bubble has it's own set of materia and laws of physics inside of it, then - and the following presupposes that there's no more reaction between these universe bubbles than possibly that they destruct or bounce back when two or more of them collide - there would be a finite set of possible conditions in each such universe, all of them computeable. And a quantum computer could, theoretically, calculate and store all such states in finite time.
It follows that at some point in time there will exist a stored version of everything that ever has had and will have happened in our universe available.
Surely some secret service wants to get their hands on that - although nowadays they should be more concerned about ensuring the safety of their president, did you hear that a shizophrenic sing language interpreter confessed having a seizure when translating at the funeral of Nelson Mandela? Is there even a limit to weirdness? Mandela is not a person to forget about easily, but I guess this circumstantial event and the irony on behalf of the US Secret Service burned the memory permanently into at least my synapses. Even if the story was untrue.So with access to this storage - and here we are at the core of my concern: The security system stalls. At quantum level, there seems to be instant access to all possible conditions (states) of our universe. And quantum computing is bound to grant us an interface to that access network, probably sooner than most of mankind would reckon today. And there's always some wizkids who read the sign "Restricted Access - Dangerous Area" more as a guideline than an order.
I hope you can conjecture what my point is, because I have slightly lost my own crumb trail
, and I admit that I'm not thinking in the very near future here. Also I'll surely be more assured when eventually physicists will present a united theory of relativity and quantum mechanics. I wonder how you deal with that uncertainty yourself? What are the consequences from a philosopher's point of view? Probably I should give up on reading stuff about the multiverse. Causes a sore brain.