June 2010 LSAT Section 5 Question 9

Which one of the following statements most accurately characterizes a difference between the two passages?

jhl5303 on February 28, 2018

truthfulness of an argument

I think i know the answer to this question but just to be sure i guess.. is an argument invalid if premise follows to conclusion but one, or all, of the premise is not true?

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Mehran on February 28, 2018

@jhl5303 yes that would be correct. We review this in-depth in the Weaken lesson.

We recommend assuming all the premises are true since if an answer choice states that a given premise is false that is very straightforward.

So straightforward in fact that you will not see this approach to attacking arguments on the LSAT (2 or so questions since 1991 have taken this approach).

Hope that helps! Please let us know if you have any other questions.