How do I practice falsification?

The most direct way to practice falsification is through a focused exercise: Pick one belief you currently hold with high confidence — about your work, your skills, your team, or your market. Write it as a clear statement. Now spend 15 minutes searching exclusively for evidence that would prove it wrong. Talk to someone who disagrees with you, read the strongest critique, or look at data you have been avoiding. Write down what you find. If you cannot find any disconfirming evidence after a genuine search, your belief is either well-calibrated or unfalsifiable — and you should know which.

Common pitfall: Performing a half-hearted search for disconfirming evidence, finding nothing convincing, and using that failure as additional confirmation. This is the most common way people co-opt this practice: 'I looked for reasons I was wrong and couldn't find any — so I must be even more right.' The test is whether your search could actually have changed your mind. If the answer is no, you did not seek disconfirmation. You performed a ritual.

This practice connects to Phase 8 (Perceptual Calibration) — building it as a repeatable habit compounds over time.