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Ideas for 'fragments/reports', 'My Philosophical Development' and 'Every Thing Must Go'

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6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism

6423	We tried to define all of pure maths using logical premisses and concepts [Russell]

6. Mathematics / C. Sources of Mathematics / 7. Formalism

6424	Formalists say maths is merely conventional marks on paper, like the arbitrary rules of chess [Russell]

6425	Formalism can't apply numbers to reality, so it is an evasion [Russell]

6. Mathematics / C. Sources of Mathematics / 10. Constructivism / b. Intuitionism

6426	Intuitionism says propositions are only true or false if there is a method of showing it [Russell]