I've been thinking lately about the assumptions underlying different intellectual fields. This is hard to compress, and I'm working on a few posts about different aspects of these assumptions, but here's a very rough summary of two crucial factors and how they vary across different fields:
The first is where the boundaries around agents are drawn. E.g. economics and law typically take the individual to be the basic unit of analysis. It's possible to talk about larger or smaller units in some cases, but these aren't as fundamental (e.g. neither would work if we thought of your tomorrow-self as a different person from your current self).
What's hard to do using econ/law-brained thinking is to reason about larger-scale units (e.g. cultures, ethnic groups, religious groups, political factions, etc). It can talk about companies, but these are a very limited kind of group agent.
Meanwhile utilitarian and scientific thinking doesn't really require a privileged notion of agency/identity at all. They focus on utility and truth in a way which is independent of which entities possess it.
The second factor is how much each field compresses the thing it cares about onto a single dimension (in other words, how much its subject area is commensurable). Utilitarianism and economics do this pretty straightforwardly. For politics, I've specified "power politics" because idealized politics aims to represent many people's interests on many different axes. However, in practice, power politics tends to collapse to a single axis of political conflict, aimed at gaining a single resource: power. (We don't yet know how to measure power in a way that makes it commensurable, but I think it's probably possible.)
Meanwhile science, law, culture, (virtue) ethics, etc, all deal with multifaceted representations that can't be scored on a single metric.
I think bayesianism goes in the same bucket as utilitarianism, and game theory goes in the same bucket as economics.
It's extremely tempting f