"You can’t treat a prompt like source code because it will give you a different output every time you use it"

But it seems we are heading there. For simple stuff, if I made a very clear spec - I can be almost sure, that every time I give that prompt to a AI, it will work without error, using the same algorithms. So quality of prompt is more valuable, than the generated code

So either way, this is what I focus my thinking on right now, something that always was important and now with AI even more so - crystal clear language describing what the program should do and how.

That requires enough thinking effort.

Didnt work for the prod data that the AI nukes in spite of prompts saying "DON'T FUCKING GUESS", just like that in all caps: https://news.ycombinator.com/item?id=47911524

What makes you think it will work for you?