instrumentalism

A pragmatic theory that ideas are instruments that function as guides of action, their validity being determined by the success of the action.

The view that the sanction of truth is its utility, or that truth is genuine only in so far as it is a valuable instrument.

In the philosophy of science, the view that concepts and theories are merely useful instruments whose worth is measured not by whether the concepts and theories are true or false (or correctly depict reality), but how effective they are in explaining and predicting phenomena.

a system of pragmatic philosophy that considers idea to be instruments that should guide our actions and their value is measured by their success