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1* ActingForTwo: Creator/LoganMarshallGreen plays both Grey Trace, and [[spoiler:Stem after taking over his body]].
2* CaliforniaDoubling: Various road signs are seen that are in the U.S. style, and the cars have the driver on the left-hand side. However, some shots early in the film clearly show Melbourne's Bolte Bridge.
3* CreatorCameo: Of a sort: [[Franchise/{{Saw}} Billy the Puppet]] appears as a piece of graffiti in the HackerCave.
4* CreatorThumbprint: [[spoiler:Leigh Whannell retains his use of big OnceMoreWithClarity-style reveals from the ''Franchise/{{Saw}}'' franchise.]]
5* LifeImitatesArt: The method used in the film to bypass spine injury and give the user his legs back is becoming real, having been [[https://english.elpais.com/science-tech/2022-02-08/three-paralyzed-patients-walk-again-thanks-to-spinal-cord-implants.html successfully used in humans by Swiss scientists in 2022]] (but without the help of [[AIIsACrapshoot AI of questionable morality]], fortunately).
6* WorkingTitle: As is evident by looking at the original script, the film's first title was ''STEM''.

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