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Ideas for 'fragments/reports', 'Intentionality and the Physical: reply to Mumford' and 'Regressive Method for Premises in Mathematics'

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6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / a. Mathematical empiricism

17628	Arithmetic was probably inferred from relationships between physical objects [Russell]
	Full Idea: When 2 + 2 =4 was first discovered, it was probably inferred from the case of sheep and other concrete cases.
	From: Bertrand Russell (Regressive Method for Premises in Mathematics [1907], p.272)