Later Scientific Theories Are Better Than Earlier

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.

Literally As Well As Metaphorically, The Man Accustomed To Inverting Lenses Has Undergone A Revolutionary Transformation Of Vision.

Normal Science, The Activity In Which Most Scientists Inevitably Spend Most All Their Time, Is Predicated On The Assumption That The Scientific Community Knows What The World Is Like. Normal Science Often Suppresses Fundamental Novelties Because They Are Necessarily Subversive Of Its Basic Commitments.

In Science Novelty Emerges Only With Difficulty, Manifested By Resistance, Against A Background Provided By Expectation.

The Answers You Get Depend Upon The Questions You Ask.