The cognitive biases and fallacies that trick us into believing our plans are accurate and achievable, that people are the only barriers to a plans success and that keep us tied to our plans long after they are proved to be hopelessly wrong.
28. Estimation anti-patterns
• Ask an expert
• Ask him (or her) face-to-face
• Know the answer you want in advance
• Confuse precision with accuracy
• If the answer doesn’t match your figure
then ask somebody else