We old timers read the source code, which is a good proxy for what runs on the computer. From that, we construct a mental model of how it works. It is not "walk

We old timers read the source code, which is a good proxy for what runs on the computer. From that, we construct a mental model of how it works. It is not "walking uphill 10 miles both ways". It is "understanding what the code actually does vs what it is supposed to do". So far, AI cannot do that. But it can pretend to, very convincingly.