The biggest problem of the story is that the turnstile not only inverts the persons and objects but also duplicates them. Because in the end, the question arises: Which woman picks up the boy at school? When the woman leaves the yacht with the dead body, where does she go to? Will she leave her son to her ego from the present of the past? Very unlikely, because it must have been the second, injured woman coming from the future who had the cell phone. But it can only be the woman from the timeline who came back to the yacht with her son. But if it's the woman from the future, what happened to her ego? The example shows that films with time travel never work.