Leads to restriction of scientists vision and resistance to paradigm change but experiments provide wealth of information and precision of data 4. Paradigm change preceded by awareness of anomaly 2. Before Copernicus had the Ptolemaic System - Problems 3. Cavendish and Priestly 4. Observation not important.
Chapter has third example on space.
The Response to Crisis 1. Do not reject paradigm. Try to ignore it. If anomaly is to provoke a crisis it must be special - call into question some fundamental part of the paradigm. Transition to extraordinary science.