You have chosen 'The Nature of Mental States' by Hilary Putnam, 'The Reality of Numbers' by John Bigelow and 'An Inquiry into Meaning and Truth' by Bertrand Russell
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |