You have chosen 'The Character of Physical Law' by Richard P. Feynman, 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell and 'Events' by Lawrence B. Lombard
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |