### Ideas from 'Non-Monotonic Logic' by G. Aldo Antonelli [2014], by Theme Structure

#### [found in 'Stanford Online Encyclopaedia of Philosophy' (ed/tr Stanford University) [plato.stanford.edu ,-]].

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###### 2. Reason / E. Argument / 1. Argument
 19115 You can 'rebut' an argument's conclusion, or 'undercut' its premises
###### 4. Formal Logic / E. Nonclassical Logics / 1. Nonclassical Logics
 19119 We infer that other objects are like some exceptional object, if they share some of its properties
###### 4. Formal Logic / E. Nonclassical Logics / 12. Non-Monotonic Logic
 19111 Reasoning may be defeated by new premises, or by finding out more about the given ones
 19113 Weakest Link Principle: prefer the argument whose weakest link is the stronger
 19114 Should we accept Floating Conclusions, derived from two arguments in conflict?
 19116 Non-monotonic core: Reflexivity, Cut, Cautious Monotonicity, Left Logical Equivalence, Right Weakening
 19117 We can rank a formula by the level of surprise if it were to hold
 19118 People don't actually use classical logic, but may actually use non-monotonic logic
###### 5. Theory of Logic / K. Features of Logics / 10. Monotonicity
 19110 In classical logic the relation |= has Monotony built into its definition
 19112 Cautious Monotony ignores proved additions; Rational Monotony fails if the addition's negation is proved