It's not only people that is hard, it's network effects that are very significant here. The article also describes all sorts of truths in isolation, but the processes where these things happen do not exist in isolation.
If all people were identical and everyone was on the same level, things would be different. But that is not how the real world works.
If all people were identical and everyone was on the same level, things would be different. But that is not how the real world works.