Comment by arjie

I'm sympathetic to that view, but I'm also aware of a particular way it doesn't explain the world. Often I make local choices that I enjoy while nonetheless regretting them later. Text social networks are the most common way this happens to me. But the other common failure mode was with food.

Without the retatrutide dose I'm on I frequently consume large amounts of food. I love apples, and blueberries, and chicken and rice. I can easily eat an entire Costco bag of Envy Apples at a stretch. Inevitably, I regret this once I have exited my fugue state of food consumption. So why do I do it? My behaviour on retatrutide is far superior at getting me both total content and joy (in the sense of area-under-the-curve rather than point-in-time).

This concept has been explored for a long time[0]. The earliest documented I know of is the concept of Akrasia https://en.wikipedia.org/wiki/Akrasia from the Greek philosophers. But I think any notion of utility must build in the notion of regret and perhaps the bicameral mind and perhaps also the notion of non-rationality. My utility functions for the things I do are not time-translation invariant, therefore I think any model that optimizes for greater content and greater joy must necessarily involve temporally non-local terms. I don't yet have a strong model of this.

But we know this is common to many mental disorders. Part of Cognitive Behavioral Therapy is an interruption of some mental pattern. My wife and I have a game we find amusing to play when we want to overrule the other's temporally local preferences: we challenge the other to a game of rock-paper-scissors to see whether the countermanding applies. When she exercises it, I frequently find that even if I win the momentary desire has passed.

tl;dr: Utility functions have different values depending on the temporal stride they take

0: Recently, Elon Musk claimed that the aim for Twitter should be "unregretted user minutes". Sadly, despite this stated aim, I found that his changes decreased these and increased regret so I had to stop using his platform. I agree with the notion of maximizing (value - regret) expressed in some abstract form, however.