PHIL 430 Lecture Notes - Lecture 2: Venn Diagram
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Another way of stating this: an argument is ____________________________________ Some arguments: all men are mortal, socrates is a man, therefore, socrates is mortal, bessie has hair, bessie has horns, therefore, bessie is a deer. Another way to state this is that a valid argument is ___________________________________ Some valid arguments: all men are mortal, socrates is a man, therefore, socrates is mortal. 1: no humans are fish, tom brady is a human, so, tom brady is not a fish. Is the following argument valid: all humans are whales, tom brady is a human, so, tom brady is a whale. Example that illustrates this point: today is wednesday. Step 1: imagine that the premises are true _________________________________________. Step 2: ask yourself, on the supposition that the premises are true, _______________________ Step 3: if you answered yes in step 2, then the argument is___________. Practice: all cats are mammals, fluffy is a mammal, therefore, fluffy is a cat.
