“Okay, then what we have implied is, It could have rained blobs of peach Jell-O, yeah? And even though there is obviously no way it rains blobs of Jell-O in our world, the fact that we can say it at all implies the existence of parallel universes where it does rain peach Jell-O, other possible worlds,” said Perla. “There’s got to be another possible world for every way that our world might have been but isn’t. That’s what our symposium is on.