Investigation 2

Thanks to the surveillance camera we can see which persons travel in a certain subway compartment at a certain time between certain stations - and we can collect millions and millions of such pieces of information from all over the world - and still know nothing interesting at all. Of course, for the subway company it is important to know the number of travellers at all times and places.
If trouble occur, the images can be used in retrospect. The awareness of the presence of the cameras might also be a calming factor.
But the cameras will tell very little about what is really happening during the trip. Yet it can be quite interesting, at least from a human point of view. Every passenger is living a unique novel, and this trip is probably a decisive chapter. But not all is seen on the outside. But all is in the mind.
We have this illusion that external factors tell a lot about reality. This illusion is also basis for the visual dramas we see in movies and television. But even documentary programs are not really documentary. They use the internationally accepted language of physical expression. Compared to natural activities, the language used in media is more precise in all details, be they hair cut, clothes, facial expression, body language, gestures and whatever.
The facade tells very little of the content in mind. So why study the facade?
The content in mind is very stable - in a sick way - in some people. But the mind itself can be open and free to mirror anything. If we want mind to act positively, we have to give positive impulses and projects.