Every Important Idea In Science Sounds Strange

The Historian Of Science May Be Tempted To Exclaim That When Paradigms Change, The World Itself Changes With Them.

As In Political Revolutions, So In Paradigm Choice--there Is No Standard Higher Than The Assent Of The Relevant Community. To Discover How Scientific Revolutions Are Effected, We Shall Therefore Have To Examine Not Only The Impact Of Nature And Of Logic, But Also The Techniques Of Persuasive Argumentation Effective Within The Quite Special Groups That Constitute The Community Of Scientists.

Its Assimilation Requires The Reconstruction Of Prior Theory And Re-evaluation Of Prior Fact, An Intrinsically Revolutionary Process That Is Seldom Completed A Single Man And Never Overnight

"normal Science" Means Research Firmly Based Upon One Or More Past Scientific Achievements, Achievements That Some Particular Scientific Community Acknowledges For A Time As Supplying The Foundation For Its Further Practice.

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.