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3 ideas
5040 | Necessary truths can be analysed into original truths; contingent truths are infinitely analysable [Leibniz] |
15422 | Three conditionals theories: Materialism (material conditional), Idealism (true=assertable), Nihilism (no truth) [Burgess] |
15423 | It is doubtful whether the negation of a conditional has any clear meaning [Burgess] |