Argue

The idea that everyone has their own opinion should be modified.

When we discuss, when we try to make an argument, if we seek the truth, there should be no disagreement. How can somebody disagree about the truth?

People tend to give opinions without understanding what the author means.

So when we face people with the argument that we disagree with, we can tell
I understand, but I disagree:
1. You are uninformed
2. You are misinformed
3. You are illogical—your reasoning is not cogent
4. Your analysis is incomplete

If we already understand what the authors mean, we have an obligation to avoid uninformed facts, misinformation, and illogical reasoning. If we cannot provide those, then we have an obligation to agree with the author.