> Add some polishing iterations and you have compressed a full product/engineering/QA cycle into one person and thirty minutes.

Depends, I guess. Engineers don’t typically know 100% the business rules (think fintech, payroll, etc.). You typically need to align with domain experts (and no, these people don’t write down their knowledge in confluence pages).

So, unless we are talking about simple software (things that can be broken without too much accountability) then sure