When there's a disagreement, ask yourself: "Suppose hypothetically that I'm wrong and the other guy is right. In what way would I ever find out and learn better?" If there's no good, realistic answer then you're bad at paths forward.
There exist methods for finding out you're mistaken about disagreements that aren't overly time consuming, and paths forward discusses them. (This has some significant overlap with Popper, but also adds some details like about having a public written account of your position, by you or someone else, that you believe is correct and will take responsibility for. Popper didn't go into how to consistently expose your ideas to criticism without it taking too much time.)
If you want to understand Paths Forward in detail, go through all of these links: