To get at the meaning of a statement the logical positivist asks, "What would the world be like if it were true?" The operationist asks, "What would … - Abraham Kaplan

"Some fool has put the head of this nail on the wrong end." "You idiot, it's for the opposite wall!" To be sure, if the space of physical objects allowed motions of translation only, and not also rotations. That space has such geometry is a fantasy; experience shows otherwise. It is only experience that makes this complaint and the rejoinder a dialogue of madmen.

The price of training is always a certain "trained incapacity": the more we know how to do something, the harder it is to learn to do it differently.

Every discipline develops standards of professional competence to which its workers are subject... Every scientific community is a society in the small, so to speak, with its own agencies of social control.