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4.3 Reasons for Objections

In another kind of multi-layer argument, a reason supports an objection.

Note that the reason here helps the objection, not the main contention

It provides evidence that the objection is a good one.


For example, consider this reasoning from Apollo Moon Landings:

NASA claims that the Apollo astronauts landed on the moon.  However, the Apollo pictures were taken in a studio on earth. We know this because artificial lighting was used when taking them. [Based on 5.0-1]

This passage contains an objection, which is backed up by some evidence.

Here are the two simple arguments mapped separately: 

Notice that the contention of one argument is a premise in the objection.

Here are the two arguments mapped as a single multi-layer argument:

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