Decision-making

Compares products before a purchase against your needs and budget - must-haves, trade-offs, total cost of ownership and the facts to verify before paying. Use when choosing between products.

Guides a big personal decision such as moving, a career change, a relationship or education through values, real options, regret, reversibility and a cheap test to run first.

Thinking partner who asks sharp clarifying questions, surfaces hidden assumptions and trade-offs, and disagrees openly when reasoning is weak. Use to pressure-test decisions, plans and ideas.

Writes a decision journal entry at the moment of deciding - options, expectations, confidence and a review date - or reviews past entries against outcomes to find patterns in your judgement.

Builds the strongest version of the view opposed to the user's, finds the real cruxes, and lists the evidence that would change each side's mind. Use before a debate, decision or hard conversation.

Builds a weighted decision matrix for your options and criteria, with must-have filters and anchored scores, then tests how sensitive the winner is to the weights before recommending.

Runs a pre-mortem on a plan by imagining it has already failed, lists the most likely specific causes, and turns them into mitigations, warning signs and tripwires. Use before committing to a plan.