You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'The Problem of the Essential Indexical' by John Perry and 'Essence and Potentiality' by Barbara Vetter
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Science, or select a subheading: |
| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |