The Mental Model Fallacy

by Cedric Chin

Intermediate · Medium

Original on commoncog.com
Sign up to import the full essay

Summary

Chin criticizes the popular habit of studying lists of mental models assembled by writers who do not practice what they describe. He separates explicit knowledge, which can be written down, from tacit knowledge, which comes only through doing, and uses tennis coaching and his own judo training to show how instruction can even get in the way. His advice is to learn from real practitioners, imitate them, and improve through trial and error.

Key points

  • Reading mental models written by non-practitioners is a poor route to real skill or success.
  • Successful practitioners do hold better mental models, but the most valuable ones resist being written down.
  • Explicit knowledge can be stated and studied, while tacit knowledge is gained only through experience.
  • Timothy Gallwey found that tennis students often improved more by imitation than by verbal instruction.
  • Business itself is likely a craft learned through apprenticeship and practice rather than reading.
  • Learners should study practitioners' own accounts, copy their actions, and reflect on trial and error.

Why practice this

Chin argues in a direct, combative voice, anticipating objections, building thought experiments, and drawing on personal stories. Retyping him teaches confident claims backed with examples, short emphatic sentences, and a clear structure from thesis to practical advice.

Practice an excerpt

These excerpts are short quotations for practice and commentary. All rights stay with the author; read the whole essay at the original source.

0%

This is a ridiculous statement on the face of it. First, it’s obvious that you can’t get good at martial arts without practice. Second, it should be clear to you that listening to MMA show-commentators aren’t as valuable as listening to the MMA fighters discussing the practice of their sport.
When Warren Buffett studies a company, he doesn’t see a checklist of mental models he has to apply. He doesn’t even see a sheaf of financial statements that he has to go through. Instead, he sees an embodied model of a company, a place that he can navigate in his mind as surely as you or I might navigate a room.
The common element to all of this is that true success is not in learning explicit mental models, but in developing tacit ones. The explicit models are merely the tip of the iceberg, poking above the ocean, hiding a huge mass of competency beneath.

About this essay

Cedric Chin argues that reading summaries of mental models cannot replace practice, because the most valuable expertise is tacit knowledge.

“The Mental Model Fallacy” was written by Cedric Chin. Read the original at commoncog.com. Copywork shows a summary and short excerpts for practice and commentary; all rights stay with the author.

Related essays