Here are two good reasons to mention Nikodem Poplawski. First, I suggest saying his name aloud a time or two. Nice, right? Second, Nikodem Poplawski is a physicist who theorizes that every black hole in our universe causes a Big Bang that creates another universe, which presumably would contain black holes of its own, ad infinitum. Conversely, our own universe is on the wrong side of an event horizon in another universe. Again, ad infinitum. Each universe has its own space-time; we can't ever visit. Sort of like how Nancy and Sluggo can't hang out with Charlie Brown and Lucy.