I fear the vast majority of projects never went with any kind of code review but somebody high on Red Bulls at 9 PM looking at the code and saying “looks good to me”.

And this is the best of cases. I fear many times in a smaller projects it was “it compiles at last, let’s see if anybody complains”. That’s why LLM’s are so damn effective today.

(been there, done that – I’m not pointing fingers, but we are human, we get tired, and we don’t have the NASA budget to complete things and ship them)