I am looking at the LSAT Prep book distributed by Kaplan and I am already confused about the material. (I have not purchased a 7Sage course yet as I'm on the trial, so I hope it is okay that I am already asking questions). The first chapter is about LSAT Reasoning and Levels of Truth (true, false, and possible). I know this may sound stupid since we already think about Levels of Truth in our daily lives, but I'm really not understanding the material based on the way they have worded things...

The book says that possible can be described as "could be true" and "could be false". Can a statement possibly be true and possibly be false at the same time, or is it just one or the other? For example, one "question stem" they gave was "Which of the following must be true?" The analysis was the answer must be true and "Therefore, the four wrong answers must be false, or are merely possible (i.e., could be false)." When they said the wrong answers could be "merely possible (i.e., could be false)", why did they not describe "merely possible" as could be false OR could be true? Is it because a could be true statement can be proven to be false?

Another example is when they ask the question, "Which of the following could be true?" The analysis was the answer could be true and that a "must be true" answer would also fit. Why is this? Isn't a "must be true" answer different from "could be true"? It has already been proven that it is true...

In other words, can a statement possibly be false or possibly be true at the same time, or is it just one or the other? Can a statement ALWAYS "possibly be true" and "must be true" at the same time?

I guess if I am getting tripped up on such a simple concept maybe I should just give up now...I really overthink things...

Thank you!

-Amanda