Philosophy 167: Class 2 - Part 1 - Turning Data into Evidence: Evidence and Hypotheses in Ptolemaic Astronomy.
Smith, George E. (George Edwin), 1938-
Synopsis: Provides a definition of the term 'working hypothesis'; stresses that evidence is a relation between data and claims that reach beyond them; reviews three working hypothesis of celestial mechanics.
Opening line: "All right, so let me start. I use the term working hypothesis very differently from its standard use."