Saved 20 pounds waiting until today to get Battlefield 1 , feels good man . <| sep |> They do give a reason why the Change only selectively affects certain technology , rather than totally wrecking physical and biological processes . Whether or not it is a good reason is up to you , but there is a reason . s As it happens , the Change is actually due to the machinations of an allpowerful alien intelligence that selectively targets and stops every individual instance of people trying to use gunpowder or electricity for certain purposes on Earth . So , it isn ' t that the laws of physics suddenly stopped working completely the laws of physics still exist and work just fine everywhere else but rather that there is something omniscient and strong enough to know the exact moment when someone tries to fire a gun or hook up a battery , and stop the rules from applying in that specific instance for that specific person here on Earth . Like I said , whether that is a good explanation is up to you , but there is a reason why certain things stop working and others do not .