I worked with a new co-worker that ... had trouble writing code, and tests. He would write a test that tested nothing. At first I thought he might be green and just needed some direction - we all start somewhere. But he had on his bio that he had 10 years of experience in software dev in the language we were working in. I couldn't quite figure out what the disconnect was, he ended up leaving a short time later.
I've worked with these sorts of people. It is never clear why they don't perform. One of them had clinical depression, another claimed to have low blood values that they simply couldn't fix. And one other just didn't seem to have any working memory beyond one sentence for whatever reason. Do people become like that? Are we going to become like that? It is a scary thought.
