[Someone]

> unless you are explicitly verifying and testing the code, how would you know?

Ask your AI to write tests and to review the code, of course /s

> And, what kind of solution needs 10,000 lines of code added to it daily?

In the first days, adding 10,000 useful lines a day can be very helpful. It means you get your MVP out earlier and/or makes it way easier to experiment with different ways to solve a problem.