Decision Making Frameworks: 7 Mental Models That Actually Work
Most bad decisions aren't from missing information — they're from asking the wrong question. A good decision making framework forces the right question. Here are the seven that hold up across careers, money, relationships, and startups, plus a modern rapid decision framework that runs them all at once.
The 7 frameworks
Pre-mortem
- When ·
- Before a big commitment.
- How ·
- Imagine it's 12 months later and the decision failed. Write the failure story in reverse — which assumptions broke first?
10/10/10 Rule
- When ·
- Emotionally loaded choices.
- How ·
- How will you feel about this in 10 minutes, 10 months, and 10 years? Weighs short-term discomfort against long-term regret.
Second-Order Thinking
- When ·
- Any decision with cascading effects.
- How ·
- Ask 'and then what?' three times. Most people stop at first-order consequences — real leverage lives one layer deeper.
Reversibility Test
- When ·
- Deciding how much analysis to do.
- How ·
- Two-way door (reversible)? Decide fast. One-way door (permanent)? Slow down, pressure-test, seek disconfirming evidence.
Base Rates
- When ·
- You're excited about an idea.
- How ·
- What percentage of similar attempts succeed? Anchor your forecast to that number before adjusting for your specific case.
Expected Value
- When ·
- Choosing between options with different odds.
- How ·
- Multiply each outcome by its probability. Compare sums. Overrides gut feel when the math is clearly one-sided.
Devil's Advocate
- When ·
- You already 'know' the answer.
- How ·
- Force yourself (or someone else) to argue the opposite as strongly as possible. Fastest way to surface hidden blind spots.
The problem with picking one framework
Any single framework has blind spots. Pre-mortem misses second-order upside. Expected value ignores identity and energy. Reversibility says nothing about incentives. A real rapid decision making workflow runs multiple frameworks in parallel and reconciles the disagreement.
That's what Tridecide does: it stress-tests any decision through 13 AI critics — devil's advocate, 10-year regret, second-order effects, survivorship bias, base rates, reversibility, stakeholders, and more — then reconciles them into one calibrated confidence score.
FAQ
What is a decision making framework?
A repeatable structure for evaluating a choice — a set of questions or steps that surface the trade-offs, risks, and second-order effects you'd otherwise miss.
Which framework is best for fast decisions?
For truly reversible calls, the Reversibility Test alone is enough — decide in minutes. For anything one-way, combine Pre-mortem with Second-Order Thinking.
How is Tridecide different from a decision matrix?
A decision matrix scores options against criteria you already trust. Tridecide attacks the decision itself from 13 angles, so the blind spots and hidden assumptions surface before you commit.