Does it ever happen that during an SEO discussion you realize that your opponent is right?

I often observe a situation when two SEOs meet in the comments and for a long time they try to prove their case to each other. This may go on for days. And it can be a discussion in which one argues the benefits of links, and the second guy speaks about the benefits of the content and what exactly the content helps to increase the power of the page. I wonder what can change their point of view? The truth is in the middle, but it is quite difficult to admit.