First and foremost, the film was a terrifying experience in terms of depicting the symptoms of dementia and other neurological disorders that could be imagined. Until today, we have always looked at the event from the outside in such films, and instead of understanding the experiences of people with these problems, we were positioned on the screen / screen like a relatives. In fact, these films fueled the feeling of pity instead of understanding and caused a distance from reality. This time, we go completely inside the person's mind and find the opportunity to experience what happened. This leads to an experience full of tension and fear as it should be. The complexity of the mind, the time jumps, seeing different faces and the constant detachment from reality have never been reflected on the screen so clearly. More precisely, it has hardly ever been so accurately conveyed from "one's mind". In doing so, Zeller's character formation skills, the power of dialogues, and the perfect setting in the fictional sense, which he created with his theater experience and the great actors contributed greatly, fueled the success of the film. The temporal jumps that followed the crashing doors, the inconsistencies that came with the dialogues and the plot that we could not fully understand to some extent carried the experience I mentioned to the highest level. He has such a successful atmosphere skill that both empathizing as the audience and playing with our mind brought along the most successful narrative for this film.