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Maria57
12-18-2007, 12:30 PM
Martin - your first example on page 66 of Book 2, under # 33....looks like the format is
If F, then C
If C, then E
Therefore, If F, then E

that is not the format you gave for a proper pure cond syll. So do I assume it is invalid?

Maria Cochrane


PS: Any plans for putting out an answer key to your exercises? It would help newbie teachers like me.

martin
12-18-2007, 03:39 PM
Maria,

Arguments in common language are often not stated in correct logical form. When interpreting common language arguments you must try to see if you can put it into logical form yourself. In this case you can, simply by switching the premises. This is done in the answer key.

I hope this helps.