‘A set of positive integers is decidable if there is an algorithm for determining whether any given positive integer belongs to it.’

‘Practice without a tradition means performing acts and relating to phenomena through a filter, lens, paradigm, or etc. that is not tied to any specific or decidable group of people.’

‘Maybe there is a mathematical proof deciding this question; maybe every mathematical question is decidable by an intuitive proof or disproof.’

‘If such an algorithm exists, we say that the problem is decidable.’

‘Which mathematical theory best describes real space is an empirical issue, not decidable independently of physical considerations.’

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