The tools on this page help you spot weaknesses in your ideas. They are an attempt to guard against the reasons why smart people make stupid mistakes.

1. Plot problems on a matrix
2. 99 Problems
3. Just give me a sign!
4. What if? analysis
5. Warning signs of Groupthink
6. Devil’s advocate
7. Pre-Mortem
8. Sunk-cost fallacy
9. Basic post-mortem
10. Love, learn and leave behind
11. Find the moral and teach it

If you’re sure your idea is a winner, use these tools to make sure you can sell it to the people who matter most.