Type III Error
Updated 2026-08-08
INTRODUCTION
English translation pending.
CORE DEFINITION
Beyond the false positive of a type I error and the false negative of a type II error, a type III error consists of correctly answering the wrong question. The method is sound and the computation accurate, but the question itself was misdefined or irrelevant, so the precision is wasted or actively misleading. The error is the most expensive of the three because rigorous execution conceals the flaw in the framing.
SCAFFOLDING EFFECT
Reduce cognitive load
- Check the question: confirm what is being asked before working out how to answer it. - Separate the two errors: distinguish solving a problem correctly from choosing the right problem. - Redefine when needed: discard a well-posed question that does not matter.
Anchor fast decisions
Rigorous methods validate the path from question to answer but say nothing about whether the question was worth asking. Because effort and precision feel like progress, a well-executed answer to the wrong question resists challenge and consumes resources that a better framing would have used. The defect lies upstream of anything the method can detect.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Type_III_errorverified
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