You have chosen 'Elements of Mathematical Logic' by Jan Lukasiewicz, 'Apriority as an Evaluative Notion' by Hartry Field and 'On the Question of Absolute Undecidability' by Peter Koellner
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |