Re: citizen infractions of rules can be prevented?
>> citizen infractions of rules can be prevented
>There has to be a certain level of "slack" in rule enforcement in order for society to function.
>Another thing they talk about is "prevention". So, how would that work?
There doesn't actually - the rules just need to be well designed (a task I'd say is beyond the capacity of our legislative system most of the time).
Surveillance that can track, for instance, cars can be used to provide sane enforcement of various rules of the road which are there mostly for the safety of others (because drivers kill more non drivers than drivers - 44% of road deaths were vehicle occupants, some of whom will not have been driving (UK 2015))
That means that we could rigorously enforce appropriate speed limits, and traffic light violations, and tailgating, and mobile phone usage.
At the point where the risk of being caught engaging in a risky behaviour becomes significant... people stop doing it. So the system prevents the behaviour, by making people aware that they will be penalised for it.
This would then improve general road safety, and reduce the number of incidents where 'but for the grace of god' defences are rolled out in court. The penalties for the risky behaviour don't need to be high, but they ought to be progressive (so first offence is relatively 'cheap', but repeat offences become increasing 'expensive'*).
The key in terms of privacy is not to store the data on vehicles that are being well driven beyond the (short) time required to identify such behaviour [the only one that should need any storage is average speed detection].
* Not necessarily financially - maybe start with points/fine, then a 1 week ban, then 2,4,8...