A possible explanation of the origin of the concept of number and some arithmetical operations based on language concepts

Stanislas Dehaene, Mathias Sablé-Meyer, Lorenzo Ciccione, Origins of numbers: a shared language-of-thought for arithmetic and geometry?, Trends in Cognitive Sciences, Volume 29, Issue 6, 2025, Pages 526-540, 10.1016/j.tics.2025.03.001.

Concepts of exact number are often thought to originate from counting and the successor function, or from a refinement of the approximate number system (ANS). We argue here for a third origin: a shared language-of-thought (LoT) for geometry and arithmetic that involves primitives of repetition, concatenation, and recursive embedding. Applied to sets, those primitives engender concepts of exact integers through recursive applications of additions and multiplications. Links between geometry and arithmetic also explain the emergence of higher-level notions (squares, primes, etc.). Under our hypothesis, understanding a number means having one or several mental expressions for it, and their minimal description length (MDL) determines how easily they can be mentally manipulated. Several historical, developmental, linguistic, and brain imaging phenomena provide preliminary support for our proposal.

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