Frequently asked questions about thinking, epistemology, and cognitive tools. 1647 answers
Identify one project or commitment you are currently in the middle of — something you have been working on for at least two weeks without external validation. Write down the three riskiest assumptions embedded in that project: the things that, if wrong, would invalidate the most work. For each.
Confusing 'fail fast' with 'be reckless.' The principle is not about moving quickly without thinking. It is about deliberately designing your sequence of actions so that the most consequential assumptions get tested first, when correction is cheapest. People who misunderstand this principle skip.
Design systems that surface errors early when they are easiest and cheapest to correct.
Accept that some error rate is normal and define how much error is tolerable.
Accept that some error rate is normal and define how much error is tolerable.
Accept that some error rate is normal and define how much error is tolerable.
When the same error happens repeatedly fix the root cause not just the symptom.
When the same error happens repeatedly fix the root cause not just the symptom.
When the same error happens repeatedly fix the root cause not just the symptom.
When the same error happens repeatedly fix the root cause not just the symptom.
When the same error happens repeatedly fix the root cause not just the symptom.
Identify one error in your life that has happened at least three times in the past six months — a repeated conflict, a missed commitment, a recurring frustration, a process that keeps breaking. Write down every instance you can remember. For each instance, write the explanation you gave yourself.
Performing root cause analysis but stopping one level too shallow — identifying a proximate cause and mistaking it for the root. You ask why you keep overeating at night and conclude 'because I get stressed in the evening.' That is not a root cause. That is another symptom. The root cause might be.
When the same error happens repeatedly fix the root cause not just the symptom.
Asking why five times in succession usually reaches the root cause of a problem.
Asking why five times in succession usually reaches the root cause of a problem.
A checklist is an error prevention agent that catches predictable mistakes.
A checklist is an error prevention agent that catches predictable mistakes.
A checklist is an error prevention agent that catches predictable mistakes.
A checklist is an error prevention agent that catches predictable mistakes.
A checklist is an error prevention agent that catches predictable mistakes.
Identify one recurring process in your life where you have made the same mistake more than once — a weekly report you submit, a deployment procedure, a packing routine before travel, a meeting you facilitate. Write a checklist of 5-10 items that captures every step you already know but sometimes.
Treating checklists as bureaucratic overhead rather than cognitive infrastructure. The person who says 'I already know all this, I don't need a checklist' is making the exact error that checklists exist to prevent. The problem was never ignorance. The problem is that human prospective memory — the.
A checklist is an error prevention agent that catches predictable mistakes.