REDECIDE
Decide better — frameworks and tools for cutting through choice overload and thinking clearly.
From weighing options against your priorities and putting numbers on uncertainty to minimising regret and deciding when to decide, ReDecide pairs free hands-on calculators with clear, worked guides on the frameworks and biases behind good choices. Think it through, then commit with confidence.
Decision-Making Tools & Calculators
Free tools for every hard choice — a weighted decision matrix, a weighted pros & cons scorer, an expected value calculator, a cost-benefit analyzer, a regret minimization scorer, and a decision timing planner.
Weighted Decision Matrix
Score options against weighted criteria and get a ranked shortlist with a clear winner — the best all-round choice for comparing several options on multiple factors
Weighted Pros & Cons Scorer
A pros-and-cons list with teeth: weight each point 1–5 and see which way you actually lean, with a lean-yes, lean-no, or toss-up verdict
Expected Value Calculator
Put a number on an uncertain choice — enter outcomes, probabilities, and payoffs to get the probability-weighted average, plus the best and worst cases
Cost-Benefit Analyzer
Weigh costs and benefits that play out over time, with proper discounting — net present value, benefit-cost ratio, and the payback period at a glance
Regret Minimization Scorer
Choose defensively when you can't put odds on the future — finds the option with the smallest worst-case regret, the minimax-regret criterion
Decision Deadline & Timing Planner
Decide when to decide — turns a deadline, the stakes, and reversibility into a deliberation window and a firm 'decide by' date
Museum of Decisions
Wander an immersive, richly illustrated collection about how humans choose — the theory of decision-making, the cognitive biases that quietly steer us, the game theory of strategic choice, and the famous decisions and thinkers who built the field, each in its own gallery. Every entry, image, and fact is drawn from Wikipedia and Wikimedia Commons.
Tour the museum →From the Journal
Clear, worked guides on decision frameworks and expected value, the cognitive biases that trip us up, beating analysis paralysis, reversible versus irreversible choices, pre-mortems, and decision journaling — reading to pair with the calculators above.
How to Use a Weighted Decision Matrix
A step-by-step method for comparing options across several criteria at once, with a fully worked three-way job-offer example and the two pitfalls that quietly corrupt the result.
Expected Value: A Practical Guide for Everyday Decisions
What expected value means, a worked warranty example, and the crucial cases where EV is the wrong tool: one-shot bets, risk of ruin, and the difference between value and utility.
12 Common Decision-Making Biases (and How to Counter Them)
A field guide to twelve of the most common cognitive biases that distort choices, each with a one-line description and a concrete countermeasure you can apply today.
How to Overcome Analysis Paralysis
Why over-analysis grips us, and six practical fixes — satisficing, decision deadlines, shorter shortlists, the 70% rule, two-way doors, and good-enough thresholds — to get unstuck.
Reversible vs Irreversible Decisions: The Two-Way Door Rule
Jeff Bezos’s one-way versus two-way door framing, why reversibility should decide how much you deliberate, and practical ways to turn irreversible choices into reversible ones.
How to Run a Pre-Mortem Before a Big Decision
Gary Klein’s pre-mortem technique imagines a decision has already failed to surface hidden risks, using prospective hindsight to defeat overconfidence and groupthink. Includes a worked example.
Keep Learning
Plain-language explainers on the foundations of decision-making — rational choice and utility, the psychology of judgment and bias, the frameworks and strategy that structure a choice, and how good decisions play out in the world — everything you need to go deeper with confidence.
Visit the Learn hub →