What does it mean that delegation to rules?

A rule is a pre-committed decision that prevents you from having to re-decide the same thing every time.

Example: You used to evaluate every meeting invitation individually — weighing who's attending, the agenda, the opportunity cost. Now you have a rule: 'No meetings before 11 AM. No meetings without an agenda sent 24 hours in advance.' You didn't stop caring about meetings. You delegated the decision to a rule, freeing your judgment for situations the rule doesn't cover.

Try this: Identify three decisions you make repeatedly — daily or weekly — where you always arrive at roughly the same answer. Write each one as an explicit if/then rule: 'If X, then Y.' Post them where you'll see them. For one week, follow the rules without re-deliberating. At the end of the week, evaluate: did the rules produce outcomes as good as (or better than) deciding each time from scratch?