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3358 | Metaphysics focuses on Platonism, essentialism, materialism and anti-realism |

3312 | There are the 'is' of predication (a function), the 'is' of identity (equals), and the 'is' of existence (quantifier) |

3352 | Analytical philosophy analyses separate concepts successfully, but lacks a synoptic vision of the results |

3329 | Presumably the statements of science are true, but should they be taken literally or not? |

3326 | Set theory attempts to reduce the 'is' of predication to mathematics |

3327 | The set of Greeks is included in the set of men, but isn't a member of it |

3335 | The standard Z-F Intuition version of set theory has about ten agreed axioms |

3330 | Negatives, rationals, irrationals and imaginaries are all postulated to solve baffling equations |

3337 | Natural numbers are seen in terms of either their ordinality (Peano), or cardinality (set theory) |

3332 | Greeks saw the science of proportion as the link between geometry and arithmetic |

3310 | If slowness is a property of walking rather than the walker, we must allow that events exist |

12793 | Early pre-Socratics had a mass-noun ontology, which was replaced by count-nouns |

3353 | If there is no causal interaction with transcendent Platonic objects, how can you learn about them? |

3304 | Why should packed-together particles be a thing (Mt Everest), but not scattered ones? |

3350 | Could a horse lose the essential property of being a horse, and yet continue to exist? |

3309 | If a soldier continues to exist after serving as a soldier, does the wind cease to exist after it ceases to blow? |

3351 | One can step into the same river twice, but not into the same water |

3323 | Maybe self-identity isn't existence, if Pegasus can be self-identical but non-existent |

3314 | Absolutists might accept that to exist is relative, but relative to what? How about relative to itself? |

3306 | The clearest a priori knowledge is proving non-existence through contradiction |

3345 | Appeals to intuition seem to imply synthetic a priori knowledge |

3341 | Logical positivism amounts to no more than 'there is no synthetic a priori' |

3349 | If we know truths about prime numbers, we seem to have synthetic a priori knowledge of Platonic objects |

3344 | Assertions about existence beyond experience can only be a priori synthetic |

3334 | Rationalists see points as fundamental, but empiricists prefer regions |

3308 | In the ontological argument a full understanding of the concept of God implies a contradiction in 'There is no God' |