> This is not a relevant strawman (if it fails for some, it works for none?). Working without a plan isn't how humans work. You want to argue about scale, that's fine, but far from absolute.

OP clearly fails to understand that the role of a project manager is to navigate ambiguity and uncertainty to deliver results in spite of them, and project managers are fully aware there is no such thing as crisp estimates and absolute certainties. Therefore OP puts strawmen regarding absurd notions of rigour that no one in the world adheres to.

I mean, hasn't OP noticed Project Manager's don't carry around stopwatches?