You have chosen 'The Mental Life of Some Machines' by Hilary Putnam, 'Of Organum or Ars Magna of Thinking' by Gottfried Leibniz and 'Symbolic Reasoning' by Hugh MacColl
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Modality, or select a subheading: |
| A. | Necessity | |
| B. | Possibility | |
| C. | Sources of Modality | |
| D. | Knowledge of Modality | |
| E. | Possible worlds |