I'm thinking the objective function could have constraints on the expected number of times the AI breaks the law, or the probability that it breaks the law, e.g.
- only actions with a probability of breaking any law < 0.0001 are permissible, or
- only actions for which the expected number of broken laws is < 0.001 are permissible.
There could also be separate constraints for individual laws or groups of laws, and these could depend on the severity of the penalties.
Looser constraints like this seem like they could avoid issues of lexicality and prioritizing avoidance of breaking the law over everything we want the AI to actually do, since the surest way to avoid breaking the law completely would be to never do anything (although we could also have a separate constraint for this).
Of course, the constraints should depend on breaking the law, not just being caught breaking the law, so the AI should predict whether or not it will break the law, not merely whether or not it will be caught breaking the law.
The AI could also predict whether or not it will break laws that don't exist now but will in the future (possibly even in response to its actions).
What are the challenges and problems with such an approach? Would it be too difficult to capture such constraints? Are laws too imprecise or ambiguous for this? Can we just have the AI consider multiple interpretations of the laws or try to predict how a human (or human judge) would interpret the law and apply it to its actions given the information the AI has?
How much work should the AI spend on estimating the probabilities that it will break laws?
What kinds of cases would it miss, say, given current laws?
Yes, but as I said earlier, I'm assuming the alignment problem has already been solved when talking about enforcement. I am not proposing enforcement as a solution to alignment.
If you haven't solved the alignment problem, enforcement doesn't help much, because you can't rely on your AI-enabled police to help catch the AI-enabled criminals, because the police AI itself may not be aligned with the police.
Case 2 is assuming that you already have an intelligent agent with motivations, and then trying to deal with that after the fact. I agree this is not going to work for alignment. If for some reason I could only do 1 or 2 for alignment, I would try 1. (But there are in fact a bunch of other things that you can do.)