What Keys or Tips Can Raise Suspicion About the Validity of Arguments, Presented Verbally and in Writing?

What keys or tips can raise suspicion about the validity of arguments, presented verbally and in writing? Cite specific examples.

When engaging in an argument it is essential to think critically to ensure that it is logical and supports the conclusion rather it is verbally or in writing. I think it is important to be suspicious about the validity of the arguments, if it conflicts with the evidence, and if the source lacks credibility. If someone has verbally giving someone directions to get to a particular location, but never been to the place, he or she is speaking of will show or reveal a lack of credibility. That same person gives false information to persuade their audience without backing up his claims will definitely raise suspicion. On the other hand, if someone is writing an article trying to convince their audience that smoking marijuana is dangerous to your health, but fail to validate his or her claims with facts, or cited information, it will be suspicion. So, therefore, it is important not to use fallacies or unsupported information when arguing a point.

Chapter 14 of your reading this week dealt quite a bit with argument fallacies as they pertain to persuasion. So, would the use of fallacies such as faulty causation, hasty generalization, either/or thinking, slippery slope, or faulty comparison be "dead giveaways" that the speaker's arguments aren't valid? Would one be more likely to convince you than the others?

Persuasive approaches are different depending on the relationship you have with your audience. For a challenging person I would have to use a presentation of facts. I would have to prove my point by using logos and supporting it with facts, studies, reports and credible resources that support the information presented. A challenging person will already have their perception of a situation for subject and to persuade them I would need proof not just my own opinion.