We all like to cite and appeal to people who are well trained in the discipline that we are talking about. We also tend to denigrate arguments or claims of someone who is not trained in the area being discussed. The fact that someone has mastered a subject means that they are an extremely valuable resource that should not be dismissed, while someone who has not studied as in-depth, by necessity of the situation, does not have as much knowledge. It seems only logical to prefer the word of the person with the greater knowledge to the person with lesser knowledge.
consist of premises and conclusions. A proper authority is preferred
when supporting the truth of a premise, but that does not mean that
their logic is valid. If the logic is not valid, then the conclusion
does not follow. Because of this, appealing to a proper authority does
not guarantee that the conclusion follows. So, even though appealing to
an authority is helpful, it is not sufficient. It is in this case that someone with lesser knowledge, but good reasoning may have an advantage, but not necessarily. More knowledge could still be used to demonstrate that the conclusion is over-stated.
Appealing to "proper" authorities when making an argument requires more than just someone who can support the truth of the premises. There should also be an appeal to someone who can support the logic of the argument. Interestingly, most of us support our premises with citations, but we rarely support our logic by citing proper authorities on reasoning.
But just as citing an authority to support a premise does not necessitate the truth of the premise, neither does citing an authority to support our logic make the conclusion necessarily follow. This brings up the reason that we all need to make sure that we understand proper reasoning. We have to be able to accurately assess arguments and determine if the conclusions actually do follow. A great introductory resource that I recommend is Norman Geisler's Come, Let Us Reason. Its not too long and is easy for the beginner. All apologists should be familiar with this resource as it may be one that they can recommend to help people understand and evaluate the logic of the arguments presented to them. .
Many great resources regarding proper reasoning and logic can be found at Apologetics 315.
More posts regarding appeals to authorities:
Do You Rely Upon Authorities?
Peer-Reviewed Only, Please