4 Comments Already

worldhiker Said,
July 28th, 2008 @12:18 pm  

There is a repeated mistake in this lesson that the conclusion is “George Washington is a mammal” where the conclusion should read “George Washington is warm-blooded”

“All mammals are warm-blooded and George Washington is a mammal”
Therefore, George Washington is warm-blooded (that he is a mammal is evidence!)

August 7th, 2008 @8:39 am  

Thanks, worldhiker! The typos were in the arguments and we’ve corrected them.

vivien Said,
September 10th, 2008 @4:14 pm  

Unfortunately, “All mammals are warm-blooded, and George Washington is warm-blooded. Therefore, George Washington must be a mammal.” is still not correct. As worldhiker said, I believe it should read, “All mammals are warm-blooded, and George Washington is a mammal. Therefore, George Washington is warm-blooded.”

September 11th, 2008 @11:21 am  

Thanks for your comment Vivien. The lesson was written correctly but you are right that the logic of that particular argument is flawed. This was deliberate. Most of the LSAT arguments are flawed in some way and that is why there are so many questions on the LSAT related to flawed arguments such as:

The author assumes…
The flaw in the above argument is most closely related to…
Which of the following most weakens the above argument…

We deliberately used a flawed argument so we could continue to use it to help with assumptions later on.

But, since we’ve had several comments on this lesson, we decided this wasn’t the place to bring any extra confusion. So, we’ve rewritten the lesson to include all new argument examples that we hope reinforce the ideas of this particular lesson.

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