Quick editorial comment: the connection that I make between morality and quantum mechanics is entirely metaphorical. I am not proposing that quantum physicists work on moral philosophy.
This post is mostly a response to Dan Kaufman’s post at The Electric Agora:
I am posting it here, because my response is a bit long for a comment on Dan’s post.
I have usually avoided moral theories, because it has seemed obvious that they could not work. In his post, Dan is pretty much arguing that. He is arguing that moral theories don’t work and probably cannot work. This is refreshing, given that we are so often bombarded with arguments that propose moral theories.
Description
Dan is discussing the difficulties of a rules based approach to moral issues. We have, with science, a pretty good rules based approach to description. And that’s where my metaphor arises. So I’ll start with a rough overview of science as description.
Human societies have come up with ad hoc ways of describing the world — rules such as “what goes up must come down.” These don’t quite work, but they work well enough to be useful.
Science takes these ad hoc rules, and makes them rigid. To make them rigid, science formalizes these rule in a very precise way and then makes the formalized rules into conventions that are to be rigidly held. And it asserts these conventions as laws of nature. What we call the law of gravity is an example of this.
As already mentioned, these laws of nature don’t quite work. But, because we have established them as conventions, we can begin to report and record the apparent discrepancies (sometimes called “exceptions”) from these laws. And when we look at those discrepancies, we begin to see patterns and we are able to come up with ad hoc rules that describe these discrepancies quite well.
With these new ad hoc rules, we come up with new conventions and new laws of nature. We have started to build an hierarchical system of rules to describe the world.
Thus we erect layer upon layer, giving us the hierarchy of rules that we call “science”.
Eventually, this rule building comes to an end — as it must if we are to have agency. For if the rule building could go on forever, then that would leave us as completely predictable mechanical automatons.
And that brings us to quantum mechanics — where the building of a rule based hierarchy comes to an end. If we look at the remaining discrepancies, it is difficult to discern any pattern. And that’s to be expected, because if there were a pattern, then the rule base approach would not have come to an end. The apparent absence of pattern leads to what is called “quantum weirdness” where a small change somewhere seems to lead to an unexpected small change somewhere else.
Morality
If we try a rule based approach to morality, the same things happens. Our attempted rule making comes to an end, as it must if we are to have agency. And it comes to an end very quickly for moral questions, because those are the very questions where agency is of greatest relevance.
That leaves us with something analogous to quantum weirdness. As we attempt to solve one moral problem, we discover that this attempt will cause another moral problem to arise elsewhere.