A Mentat is a profession or discipline. Mentats are organic beings trained to mimic computers: minds developed to staggering heights of cognitive and analytical ability. Unlike computers, however, Mentats are not simply calculators. Instead, the exceptional cognitive abilities of memory and perception are the foundations for supra-logical hypothesizing. Mentats are able to sift large volumes of data and devise concise analyses in a process that goes far beyond logical deduction: Mentats cultivate "the naïve mind", the mind without preconception or prejudice, similar to the contemporary practice of Zen, that can extract the essential patterns or logic of data, and deliver useful conclusions with varying degrees of certainty.