Why not A

Started by hannahnaylor5 · started 2019-10-10 01:06 · last activity 2019-10-11 00:45 · 2 replies

After diagramming A & C, I'm having a hard time seeing how they are different. Don't the premises in each invoke the contrapositive to arrive at the conclusion?

Replies

  1. Irina · 2019-10-10 04:35

    @hannahnaylor5, The issue with (A) is that the condition in the premise is different from the one in the conclusion -"performed by a highly skilled surgeon" is not the same as "properly performed." In fact, it is possible that both of these conditions are true - the surgery has been improperly performed by a highly skilled surgeon. The bottom line is since (A) conclusion is unsupported by the premises, we can conclude that the reasoning is different from the stimulus.
  2. hannahnaylor5 · 2019-10-11 00:45

    Oh okay, I see that now. Thank you!

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