Combining Texts

All the ideas for 'On the Moral and Legal State of Abortion', 'Elements of Mathematical Logic' and 'works'

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3 ideas

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic
8942 Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher]
     Full Idea: In response to Aristotle's sea-battle problem, Lukasiewicz proposed a three-valued logic that has come to be known as L3. In addition to the values true and false (T and F), there is a third truth-value, I, meaning 'indeterminate' or 'possible'.
     From: report of Jan Lukasiewicz (Elements of Mathematical Logic [1928], 7.I) by Jennifer Fisher - On the Philosophy of Logic
     A reaction: [He originated the idea in 1917] In what sense is the third value a 'truth' value? Is 'I don't care' a truth-value? Or 'none of the above'? His idea means that formalization doesn't collapse when things get obscure. You park a few propositions under I.
16. Persons / A. Concept of a Person / 1. Existence of Persons
20618 Persons must be conscious, reasoning, motivated, communicative, self-aware [Warren, by Tuckness/Wolf]
     Full Idea: Suggested characteristics of personhood: consciousness (esp. of pain); reasoning and problem solving; self-motivated activity; varied communication on many topics; self-concepts and self-awareness.
     From: report of Mary Anne Warren (On the Moral and Legal State of Abortion [1973], p.55) by Tuckness,A/Wolf,C - This is Political Philosophy 8 'Standing'
     A reaction: [a 'famous' article] A number of non-human animals come very close to passing these tests. I suspect the complex communication is only in there to disqualify them from getting the full certificate. (But she wrote on animal rights).
24. Political Theory / D. Ideologies / 8. Socialism
23053 The great interest of the human race is cordial unity and unlimited mutual aid [Owen]
     Full Idea: It is the one great and universal interest of the human race to be cordially united, and to aid each other to the full extent of their capacities.
     From: Robert Owen (works [1830]), quoted by John H. Muirhead - The Service of the State IV
     A reaction: [Inscribed on his tomb in Newport, Shropshire] In the middle of the early industrial revolution, Owen worked hard for the rights of the people who worked in his factory.