Combining Texts

All the ideas for 'fragments/reports', 'An Introduction to Modal Logic' and 'Killing and Letting Die'

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9 ideas

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / b. Terminology of PL

9540	A 'value-assignment' (V) is when to each variable in the set V assigns either the value 1 or the value 0 [Hughes/Cresswell]

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / d. Basic theorems of PL

9541	The Law of Transposition says (P→Q) → (¬Q→¬P) [Hughes/Cresswell]

4. Formal Logic / B. Propositional Logic PL / 4. Soundness of PL

9543	The rules preserve validity from the axioms, so no thesis negates any other thesis [Hughes/Cresswell]

5. Theory of Logic / K. Features of Logics / 4. Completeness

9544	A system is 'weakly' complete if all wffs are derivable, and 'strongly' if theses are maximised [Hughes/Cresswell]

20. Action / C. Motives for Action / 5. Action Dilemmas / c. Omissions

4692	It is not true that killing and allowing to die (or acts and omissions) are morally indistinguishable [Foot]

4694	Making a runaway tram kill one person instead of five is diverting a fatal sequence, not initiating one [Foot]

25. Social Practice / C. Rights / 1. Basis of Rights

4693	The right of non-interference (with a 'negative duty'), and the right to goods/services ('positive') [Foot]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]