> Come back in a week and update us on how long you've spent debugging all the ways that the code was broken that you didn't notice in those 15 minutes.

Same as if I let a junior engineer merge code to main w/o unit tests.

Complete garbage, of course.

Oh wait, my code is also trash w/o good unit tests, because I am only human.

Instead I'll write out a spec, define behaviors and edge cases, and ask the junior engineer to think about them first. Break implementation down into a plan, and I'll code review each task as it is completed.

Now all of a sudden, the code is good, independent of who/what wrote it!

Yep, precisely my point. Reviewing a one-shot in 15 minutes is irresponsible.