[roland00]

In sum humans do not always optimize towards one variable like success / fitness.

Instead they optimize to many things like money, prestige, power, security, and so on. Much like you can't describe health as a single thing, when you collapse your insight to a single variable you miss everything in your simulation of how reality works.

This applies to an individual level but especially applies towards a cooperative level with multiple individuals. When we cooperate (or just act in ambiguous situations) sometimes trying to collapse your actions to "mental shortcuts" aka Heuristics in Judgment and Decision-Making to borrow some thinking fast and slow language further reduces insight.