> because there’s always still the anxiety that someone might spot a flaw in your argument that you didn’t

What's the need to always being 100% right. There are very few situations where there is a 100% right solution. Most are optimized 80-90% for a particular problem set. Indicating that "within our context, we believe this is the best solution" goes a long way in creating that opportunity for discussion and deeper understand of either gaps in the context for the problem, or adjacent problems that may leverage the work.