Variability Quotes
More Variability Quotes
Based upon evidence such as already presented, it appears feasible to set up criteria by which to determine when assignable causes of variation in quality have been eliminated so that the product may then be considered to be controlled within limits. This state of control appears to be, in general, a kind of limit to which we may expect to go economically in finding and removing causes of variability without changing a major portion of the manufacturing process as, for example, would be involved in the substitution of new materials or designs.
walter a. shewhart— Shewhart, Walter A. (1931). Economic control of quality of manufactured product. D. Van Nostrand Company. p. 24.
When plugged in, the least elaborate computer can be relied on to work to the fullest extent of its capacity. The greatest mind cannot be relied on for the simplest thing; its variability is its superiority.
jacques barzun— "The Masterpiece," in A Stroll with William James (1983)
