What does it mean that an agent is a system that acts on your behalf?

Example: A product manager designs a meeting triage agent: "If I receive a meeting invite that has no agenda and no clear decision to be made, I decline with a one-line request for context." She did not decide this in the moment each time. She decided it once, encoded the trigger-condition-action pattern, and let the agent execute. Within two months, her calendar has twelve fewer hours of unproductive meetings per week — not because she became more assertive, but because she delegated the recurring decision to a designed process.

Try this: Identify one recurring decision you make at least three times per week where you already know the right answer before you deliberate. Write it as an explicit agent using this format: TRIGGER (what situation activates it), CONDITION (what must be true), ACTION (what you do). Example: TRIGGER — someone asks me to take on a new project. CONDITION — my current project list exceeds five active items. ACTION — I say "I cannot take this on until I close one of my current commitments. Can we revisit in two weeks?" Post this agent somewhere you will see it. Follow it for one week without exception, then evaluate: Did the agent produce better outcomes than your improvised decisions would have?