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Lesson: Challenging Critical/Logical Reasoning - 09t01

Reasoning Classics: The Causal Argument, continued

[Page 9 of 24]

In causal arguments, the assumption will almost always be the following: No alternative cause is possible.

Recognizing this common causal assumption will help you not only on assumption questions, but on strengthen/weaken questions as well. Let's see how.

Review our rollercoaster example from the previous page.

Last year the amusement park in our area replaced its steel rollercoaster with a vintage-style wooden rollercoaster. However, since that time, park officials have noted that attendance has dropped by 10 percent. Officials have concluded that people prefer steel rollercoasters to more old-fashioned rollercoasters, and that this preference has led to a decrease in attendance.

How would you weaken this argument?

How would you strengthen this argument?


To weaken the argument, show that there was another cause for the decrease in attendance other than the new rollercoaster.

To strengthen the argument, rule out all other alternative causes.

Let's see how all this works in an actual question.

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