## GUESS
^{2)}

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"A question which can be answered by "yes" or "no" (A. RAPOPORT, 1966, p.6).

This is a very useful notion for the evaluation of the quantity of information.

A. RAPOPORT explains: "It can be easily seen that a number from one to one hundred can always be guessed in seven guesses, while a number from one to one milion can always be guessed in twenty guesses. To do this one needs to make guesses in such a way as to eliminate one half of the remaining range. In the case of a milion, one starts with: "Is it less than 500.000 ? If yes, "Is it less than 250.000 ?". If no, then is it less than 375.000 ? ", etc. Since one million is less than 2, it will take at most 20 such dichotomies to determine the number" (p.6).

### Categories

- 1) General information
- 2) Methodology or model
- 3) Epistemology, ontology and semantics
- 4) Human sciences
- 5) Discipline oriented

### Publisher

Bertalanffy Center for the Study of Systems Science(2020).

To cite this page, please use the following information:

* Bertalanffy Center for the Study of Systems Science (2020).* Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]

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