Film-making versus filming
A good film, even better when it as seen as an anti-reality-TV statement. The basement is the identity - the unconscious, the memories - cameras cannot reach. Through their surveillance, they could see everything but had no access to the meaning of anything... As most catastrophically demonstrated with the bell. However, we could see, through flashbacks - through narrative (which the kid rejects at the start) - and I think that's the point. It's about the danger of unmediated access... Of seeing without explanation.
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