5 ideas
23367 | Even pointing a finger should only be done for a reason [Epictetus] |
13831 | Logic is based on transitions between sentences [Prawitz] |
13825 | Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz] |
13823 | In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz] |
74 | Even God could not undo what has been done [Agathon] |