That Sometimes Clear ... And Sometimes Vague

Research Programmes, Besides Their Negative Heuristic, Are Also Characterized By Their Positive Heuristic.

One May Rationally Stick To A Degenerating Research Programme Until It Is Overtaken By A Rival And Even After. What One Must Not Do Is To Deny Its Poor Public Record... It Is Perfectly Rational To Play A Risky Game: What Is Irrational Is To Deceive Oneself About The Risk.

Indeed, This Epistemological Theory Of The Relation Between Theory And Experiment Differs Sharply From The Epistemological Theory Of Naive Falsificationism.

In Degenerating Programmes, However, Theories Are Fabricated Only In Order To Accommodate Known Facts

Blind Commitment To A Theory Is Not An Intellectual Virtue: It Is An Intellectual Crime.