conjunction fallacy

conjunction fallacy

English

Noun

Examples
  • It is more likely to be cold and rainy tomorrow than than it is to be cold tomorrow

conjunction fallacy (uncountable)

  1. The contradictory statement that the conjunction of two possibilities is more probable than one or both of those possibilities independently.
    • 2007 September 19, Eliezer Yudkowsky, “Conjunction Fallacy”, in LessWrong[1], archived from the original on 3 February 2026:
      Could the conjunction fallacy rest on students interpreting the experimental instructions in an unexpected way - misunderstanding, perhaps, what is meant by "probable"?