Instrumentalism

Whenever we observe anything – a scientific instrument or a galaxy or a human being – what we are actually seeing is a single-universe perspective on a larger object that extends some way into other universes. — David Deutsch, The Beginning of Infinity: Explanations That Transform the World

Copenhagen Interpretation: Niels Bohr’s combination of instrumentalism, anthropocentrism and studied ambiguity, used to avoid understanding quantum theory as being about reality. — David Deutsch, The Beginning of Infinity: Explanations That Transform the World

I have mentioned behaviourism, which is instrumentalism applied to psychology. — David Deutsch, The Beginning of Infinity: Explanations That Transform the World

Logical positivism [is] the bad philosophy that statements not verifiable by observation are meaningless. — David Deutsch, The Beginning of Infinity: Explanations That Transform the World