Who said I wanted my outcomes to be deterministic. Why is it that the only way we accept programming is for completely deterministic outcomes, when the reality is that is an implementation detail.

I am a real user and I am on a general purpose e-commerce site and my ask is "I want a TV that is not that expensive", then by definition the user request is barely deterministic. User requests are normally like this for any application. High level and vague at best. Then developers spend all their time on edge cases, user QA, in the weeds junk that the User does not care about at all. People dont want to click filters and fill out forms for your app. They want it to be easy.