What is the opposite of the fallacy of composition?

The direct opposite of the fallacy of composition is the fallacy of division.

  • The fallacy of composition occurs when an argument incorrectly assumes that what is true for the parts is also true for the whole (e.g., if a company has some successful products, the company must be successful on the whole).
  • The fallacy of division occurs when an argument incorrectly assumes that what is true for the whole is also true for its individual parts (e.g., if a car is well made overall, its individual components must be well made).

A related concept is the ecological fallacy, an error in statistical analysis where conclusions about individuals are wrongly inferred from group-level data. While not the exact opposite of the fallacy of composition, the ecological fallacy also involves the unwarranted transfer of qualities between parts and wholes