They whole “you can just throw LLMs at the test suite and regenerate the code” thing needs to die excuse it can’t work for any software that has users. A test suite cannot feasibly cover every observable behavior. Every time you regenerate the code this way you’ll change a huge chunk of the thousands of little observable behaviors that aren’t fixed in place by the test suite. You can’t do this if you have users.

Similarly to your directions analogy, I’ve been using the the analogy id trying to ensure that a 1000 restaurant franchise produces the exact same peanut butter sandwich for ever customer.

It’s much easier to figure out the primitives that your employees understand and then use those primitives to describe exactly how to build a sandwich than it is to write a massive specification that describes what they should produce and just let them figure it out.