An objection to a premise of a reason or objection
This argument map comes from the model answer to Exercise 4.5: What types of objections do we have here?
2 premise objections
1 ordinary objection, 1 premise objection
1 premise objection, 1 inference objection
2 inference objections
1 ordinary objection, one inference objection
Consider this simple argument:
Which of the following claims would be an inference objection to this argument?
Iraq destroyed all its WMD after the 1991 war.
The UN weapons inspectors have been unable to find WMD in Iraq.
Thousands of people would be killed in a war against Iraq.
Iraq has a right to possess WMD.
What is the appropriate way to map an inference objection?
Map it as one objection pointing to the inference between the first premise and the contention.
Map it as an objection to the first premise.
Map it as an objection to a co-premise which was previously unstated.
Map it as an objection to an objection.
What is the difference between a premise objection and an inference objection?
One provides evidence that a stated premise is false whereas the other provides evidence that an unstated co-premise is false.
One is a flaw in a premise while the other is a flaw in an inference.
One is a false premise while the other is evidence that the conclusion is false.
One is a special sort of premise while the other is a special sort of inference.
What is wrong with this argument map?
The rejoinder is an inference objection and should be diagrammed as an objection to a co-premise of the reason.
The objection is a separate objection to the main contention, not a rejoinder.
The reason is not really evidence for the main conclusion.
The objection is not really evidence against the reason.
What is the fundamental principle which underlies Tutorial 5?
Every argument, no matter how complex, is made by joining together simple arguments; thus every reason or objection must be joined to a specific claim.
Every objection to an inference should be diagrammed as an objection to a co-premise.
Objections come in two kinds: premise objections and inference objections.
Inference objections come in two kinds: inference rejoinders and inference rebuttals.
Which of these is TRUE?
In everyday reasoning, inference objections are more common than premise objections.
People are generally pretty clear about the structure of their arguments, even without argument mapping.
Some arguments are too complex to be reduced to sets of simple arguments joined together.
Inference objections exist because there is a missing layer between the primary reason (or objection) and the contention.
This argument map
shows:
an ordinary objection (i.e., an objection which is neither a premise objection nor an inference objection).