[Zanfa]

> Just design the software upfront for what you will need, like a professional.

This is impossible for anything more complex than the simplest of toy examples. Never have I seen a production system where all behaviors and use cases are known, well-defined and correctly documented ahead of (or even after the) implementation in enough detail. That’s just not how people operate.

It’s the equivalent of saying everybody should just come together and talk it out to achieve world peace.