Support, not substitution.
WHAT IT CAN DO
Structure the decision Identify options you had not considered Surface assumptions Argue against your preference List what you would need to know
WHAT IT CANNOT DO
Decide Know your situation fully Bear the consequence
THE USEFUL SEQUENCE
State the decision and your constraints Ask for options, including unconventional ones Ask what each depends on Ask for the case against your preferred option Decide yourself
THE MOST VALUABLE PROMPT
"What would have to be true for this to be the wrong decision?"
THE SYCOPHANCY WARNING
It will agree with whatever you propose unless you ask it not to.
Ask explicitly for objections.
WHAT TO SUPPLY
Your actual constraints, your actual numbers, what you have already tried.
Without those the analysis is generic.
WHERE NOT TO USE IT
Decisions about specific people Anything with legal or regulatory consequence, without proper advice Anything you cannot explain afterwards
THE ACCOUNTABILITY POINT
The decision is yours.