They're ghosts, surely, and Rabbit absolutely believes in them. There are things in the world, strange machinations of physics and chemistry,queer intersections of biology and theology, that Rabbit hasn't the slightest interest in assuming he'll ever understand or be able to solve. They're simply there to be believed in, and Rabbit is a born believer. He wants to believe. He has always thought of life as pregnant with possibility-- a freak twister or wardrobe the only thing separating him from another world-- so ghosts, spirits, aliens and supreme beings coexist within Rabbit with ease. There's a kind of beauty in accepting the possibility, if not the plausibility, of everything imaginable.