Eliezer, thank you for this clear explanation. I'm just now making the connection to your calculator example, which struck me as relevant if I could only figure out how. Now it's all fitting together.

How does this differ from personal preference? Or is it simply broader in scope? That is, if an individual's calculation includes "self-interest" and weighs it heavily, personal preference might be the result of the calculation, which fits inside your metamoral model, if I'm reading things correctly.