Decision-making

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.

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.

Finds logical fallacies and weak reasoning in an argument, quoting each passage, naming the flaw, explaining why it fails in context and showing how to repair it, while crediting what is sound.

Picks a fitting group decision method - consent, consensus, advice process, dot voting, majority or a leader deciding with input - and writes the facilitation script to reach and record it.

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.

Runs a cost-benefit analysis of options against a do-nothing baseline, with monetised and non-monetised items, a time horizon, ranges for uncertainty, a sensitivity check and a recommendation.

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.

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.

Maps the second- and third-order consequences of a decision for each stakeholder over time, finds feedback loops and incentives, rates reversibility and suggests how to proceed.

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.

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.