Black and white pictures, extremely advanced narrative, deceived in a chain of chains, the ending is surprising!
It is different from simple flashbacks and interludes, and it is also different from the complicated multi-threading like "Crash". This is the communication between two processes, one of which swallows the other's carefully designed exit(-1).
As the name suggests, there is a poster that explains it very well, as if the double helix of DNA interlaces two pieces of time and space, and it is like a greedy snake chasing and destroying itself.
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