This essay deals with misunderstandings which, in this author’s opinion, seem to prevail in the minds of some AHP critics. The main apparent problem is the lack of necessary knowledge about the scale concept including what a scale is, how it is mathematically defined, and what one can or cannot do with a scale. This knowledge is critical for a good understanding of AHP. This study will review the concept of scales, discuss common misconceptions, introduce the compatibility index G and explain how it addresses one of the previous fallacies perpetuated about AHP.
How to Cite
AHP misconceptions, scales, compatibility index
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