Читать книгу The Philosopher's Toolkit - Julian Baggini, Julian Baggini - Страница 66

It is important to understand, however, that not all conceptual systems are axiomatic – not even all rational systems. For example, some deductive systems try simply to replicate and refine the procedures of reasoning that seem to have unreflectively or naturally developed among humans. This type of system is called a natural system of deduction; it doesn’t posit any axioms but looks instead for its formulae to the practices of ordinary rationality.