Measuring Length and Width
Updated 2026-08-10
INTRODUCTION
English translation pending.
CORE DEFINITION
Measuring length and width is a phrase from Jia Yi's essay on the faults of Qin, where it describes the comparison of the six states with the state of Qin. It means to measure lengths and compare magnitudes, extended into a general principle of assessing relative strength on a common scale before acting. The core proposition is that comparison is meaningful only when both sides are measured on the same dimensions, and that a settled comparison prevents decisions from resting on wishful thinking. The key qualification is that the choice of dimensions determines the conclusion, so a comparison omitting morale, quality or commitment can produce a confidently wrong verdict.
SCAFFOLDING EFFECT
Reduce cognitive load
- Fix The Yardstick: define the dimensions and units before comparing anything at all. - Compare Item By Item: work through each dimension separately instead of trading impressions. - Read The Result: derive relative advantage and let it set the strategy.
Anchor fast decisions
Impressions of strength are assembled from vivid but unrepresentative signals, so two parties are usually compared on incomparable bases. Forcing both onto identical dimensions removes that mismatch and makes each judgement checkable by others. The resulting profile shows which dimensions favour which side, which is exactly the information a strategy of attack or defence requires.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- zh.wikisource.orghttps://zh.wikisource.org/wiki/%E6%96%B0%E6%9B%B8/%E5%8D%B7%E4%B8%80verified
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