conventional wisdom, the

Common knowledge that is held to be true, but may not be. The conventional wisdom says to feed a cold and starve a fever, but that doesn't reflect current medical practice.

A widely held belief on which most people act. For example, According to conventional wisdom, an incumbent nearly always wins more votes than a new candidate . This term was invented by John Kenneth Galbraith, who used it in The Affluent Society (1958) to describe economic ideas that are familiar, predictable, and therefore accepted by the general public. Today it is used in any context where public opinion has considerable influence on the course of events.

What the majority believe and act upon. The term was coined by the American economist John Kenneth Galbraith in The Affluent Society (1958), in which he so described economic views that are familiar, predictable, and therefore generally accepted. It was soon transferred to other areas in which public opinion plays an important role in influencing events. It has just about replaced the now virtually obsolete cliché, climate of opinion.