PHI 1101 Lecture Notes - Lecture 25: Modus Ponens, Fallacy, Acronym

• School: University of Ottawa
• Department: Philosophy
• Course: PHI 1101
• Professor: Laura Byrne

Document Summary

Difficult for me to follow as i did not write the test. Application answers: errors in the definitions one is too narrow. The other is too contradictory because neither is true or false. When it was not well done, they did not argue their position enough. All humans are mortal, all women are mortal, therefore al women are humans. No magical way to do this but use your imagination. All dogs are animals, all cats are animals, therefore all cats are dogs. (same form but different content which results in a false matter, making the first example not sound because it is not truth preserving). Formal fallacies: they are arguments that look like the valid argument form but are importantly different as they are not valid by showing what content is not truth preserving, fallacy of affirming the consequent. It is a fallacy because it leads you to the true to the false.