There’s universes next door. We know it. We feel them. Aren’t there places just next door where President Clinton is tied in knots by another recalcitrant Congress? Aren’t there times as close as yesterday where Prince lives, chastened, after a last-minute intervention? Don’t tell me there aren’t. You feel it, too.
The internet-meme version of this is the Mandela Effect: The idea that there’s tiny, latent evidence of other universes in people’s cross-wired memories. If one follows the Mandela Effect far enough down the road, it emerges that there’s moments where the universes swapping places are crossing paths; theoretically, anyone paying close enough attention at the time could notice the transition.