In the very, very simplest terms, judging the validity of an argument starts centers around this process:
1) Identify the rhetoric (Lines of Argument) from the actual, formal reasons. Separate the persuasive language from the actual claims to truth and fact.
2) Analyze those reasons (claims to truth and fact) by identifying their logic (often in the Implicit Reasons) and evidence.
3) Test and evaluate the logic and evidence; identify logical errors and ask whether the evidence can and has been tested and objectively, repeatedly, factually verified.
If a person for example is in the situation of comiting suicide, they can be saved by someone who is witnessing the person. The person can confront the person comitting suicide by talking to them gently about why they are doing it or they can also call kids help phone.
Depending on the sentence content, there are four ways to puncuate a compound sentence with two independent clauses -
Use a semicolon
Use a semicolon and a transition word (however, therefore)
Use a colon
Use a comma and coordinating conjunction (and, but, for)
Fitzgerald's message about the American Dream is that it is all disillusionment, meaning fake or not real. In his novel The Great Gatsby, Gatsby throws disillusionment all over the place. He seems like he has friends but when his time comes to have a funeral only one person calls and the person calling just wants his clothing back from Gatsby.