McNamara fallacy

The McNamara fallacy (also known as the quantitative fallacy), named for Robert McNamara, the US Secretary of Defense from 1961 to 1968, involves making a decision based solely on quantitative observations (or metrics) and ignoring all others. The reason given is often that these other observations cannot be proven. — Daniel Yankelovich, "Corporate Priorities: A continuing study of the new demands on business" (1972).

McNamara fallacy

The McNamara fallacy (also known as the quantitative fallacy), named for Robert McNamara, the US Secretary of Defense from 1961 to 1968, involves making a decision based solely on quantitative observations (or metrics) and ignoring all others. The reason given is often that these other observations cannot be proven. — Daniel Yankelovich, "Corporate Priorities: A continuing study of the new demands on business" (1972).