The limitations on human performance, especially on processing information, have continuously received attention since Millerâ€™s (1956) seminal article. Thomas L. Saaty added to the body of knowledge with a paper titled, â€˜Why the Magic Number Seven Plus or Minus Twoâ€™, and this memoir essay summarizes that paper and its main contribution to the literature and science (Saaty & Ã–zdemir, 2003). The paper concludes by supporting the idea that to serve both consistency and redundancy, it is best to keep the number of elements to seven or less, and therefore Millerâ€™s seven plus or minus two is indeed a limit on our ability to process information. Thomas L. Saaty was born on the 7th month of the year and passed awayÂ on August 7*2 = 14, 2017.
AHP, judgments, consistency
Saaty, T.L. (1996). Multicriteria Decision Making, The Analytic Hierarchy Process. Pittsburgh, PA: RWS Publications.
Saaty, T.L, & Ã–zdemir M.S. (2003). Why the magic number seven plus or minus two, Mathematical and Computer Modelling, 38, 233-244. Doi: https://doi.org/10.1016/S0895-7177(03)90083-5
Wilkinson, J.H. (1965). The algebraic eigenvalue problem. Oxford:Clarendon Press. Doi:
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