I think real people have preferences whose weights decay with distance -- geographical, temporal and conceptual. I think it would be reasonable for artificial agents to do likewise. Whether the particular mode of decay I describe resembles real people's, or would make an artificial agent tend to behave in ways we'd want, I don't know. As I've already indicated, I'm not claiming to be doing more than sketch what some kinda-plausible bounded-utility agents might look like.