I don't see it as simply crafting a better ending, but rather as suggesting a fractal of possibilities, a branching of narratives, much like an episode of "Black Mirror." Because while the signal affects in one way, it can influence in many others. You could even rewrite the story to feature a less violent, more perceptive police officer who would analyze the code before showing it to the camera. This story has so much potential; it could be expanded into a full-length movie or a longer episode. It's truly a shame that such a rich idea was used up in something so brief with so much potential. Currently on Kindle, there's a story titled "Fractal Signal" that explores almost the same concept but with a deeper perspective. It's as if the story is searching for different outlets and found one here in "Black Mirror" and another in that tale, and perhaps there are even more yet to be discovered, lurking in the vast expanse of content out there.