You know how sometimes another driver will come this close to hitting you, or you’ll just barely avoid tripping as you go down the stairs? Not often — you don’t have a close shave every day — but just now and then? And it’s such a close call that you can actually feel another timeline branching away from that moment, so now there is the timeline you’re in where you had a narrow escape and then there’s the other timeline where you did get hit or fall down. And you feel, not relief, but this huge stab of guilt, because you go off whistling and that other you is lying in a heap somewhere feeling very poorly indeed.
I’m not sure where I’m going with this except maybe I need to watch fewer sci-fi movies.