Its Assimilation Requires The Reconstruction Of Prior

Later Scientific Theories Are Better Than Earlier Ones For Solving Puzzles In The Often Quite Different Environments To Which They Are Applied. That Is Not A Relativist's Position, And It Displays The Sense In Which I Am A Convinced Believer In Scientific Progress.

The Answers You Get Depend Upon The Questions You Ask.

Research Under A Paradigm Must Be A Particularly Effective Way Of Inducing Paradigm Change.

The Transition Between Competing Paradigms Cannot Be Made A Step At A Time, Forced By Logic And Neutral Experience. Like The Gestalt Switch, It Must Occur All At Once (though Not Necessarily In An Instant) Or Not At All.

The Man Who Is Striving To Solve A Problem Defined By Existing Knowledge And Technique Is Not, However, Just Looking Around. He Knows What He Wants To Achieve, And He Designs His Instruments And Directs His Thoughts Accordingly. Unanticipated Novelty, The New Discovery, Can Emerge Only To The Extent That His Anticipations About Nature And His Instruments Prove Wrong... There Is No Other Effective Way In Which Discoveries Might Be Generated.