|Ethics, philosophy: ethics is concerned with the evaluation and justification of actions and ultimately a justification of morality. See also good, values, norms, actions, deontology, deontological logic, consequentialism, morals, motives, reasons, action theory.|
|Geach, Peter T.
Books on Amazon
Moral/Logic/Geach: often regarded as imperatives, but different logic - "Should I?": Only two possible answers, and these are contradictory - "should I": three: (A) duty, ... (B) right pro, but also contra., (C) Obligation, not ... -
Contradiction/action/moral/ethics/Strawson/Geach: in interesting cases, R is not inconsistent with P and Q itself, but because the contradiction (contradiction) of P and Q follows together - from P and Q and R together follows S and its contradiction ~S, therefore it does not matter if we explain closability (consequence) in terms of inconsistency, or vice versa inconsistency in terms of closability -
GeachVsWilliams: even if a contradictory order follows from an earlier given, one will not say that the command recipient had received the order to draw a wrong conclusion. Williams: if no action follows, no practical conclusion was concluded. GeachVsWilliams: vice versa, if the conclusion can be derived, the conclusion exists.
Logic Matters Oxford 1972