Spoilers for ‘Paradox’, there were some interesting ideas in the film, the main one;
is the severed arm. The biggest failing of the film for me is that this is just treated as a freaky event, not something that’s developed to be integral to the resolution of the movie. The implication of the arm is either that it’s autonomous (which is a whole other story if they used it) or that it’s connected to a version of Chris O’Dowd who’s still in another universe! That means that the Chris O’Dowd in the movie has his arm in another universe too. Unlike the woman embedded in the pipework, he’s feeling no pain and the “other” arm is able to write messages from his counterpart. But after they get the gyro back none of this is explored! There are no further messages, no attempts to join forces to figure out what’s going on or open another channel of communication. They just reverse the polarity and cross the streams etc. and that’s that.
Having a cool idea and NOT pursuing it is just so disappointing.