concept Updated 2026-08-21 Tags: Parable, Legalism, Judgment, Rules, Practical-Reasoning

郑人买履 / Zheng Ren Mai Lv

郑人买履 / Zheng Ren Mai Lv enters the wiki through 《资治通鉴·秦纪》112-2|秦始皇也是他的书迷? as the 韩非 parable about a person from Zheng who trusts a pre-measured shoe size more than his own foot. In the episode’s explanation, the story warns against dead rules, fixed measures, and stale formulas when the actual situation is available for inspection.

The concept is adjacent to Rule Idolatry, but it works at the level of judgment before institution. A measurement can be useful, but it becomes absurd when it replaces the reality it was meant to represent. The episode uses the story to make Han Fei’s practical Legalist style legible: governance and personal judgment both need contact with concrete conditions rather than reverence for inherited form.

Key Claims

  • A rule or measurement is a tool, not a substitute for the object it measures.
  • Practical judgment requires the ability to revise behavior when the real situation contradicts the prepared formula.
  • The parable supports a Legalist suspicion of empty talk and rigid convention, but it can also apply more broadly to institutional overcompliance.

Connections

  • 韩非 - source figure associated with the parable.
  • 法家君术 - adjacent governance frame that values practical control and usable information.
  • Rule Idolatry - institutional pattern where the rule becomes more real than the purpose or object.
  • 韩国, 《孤愤》, and 《五蠹》 - source setting and textual cluster.