a neutrino walks into a bar, the bartender says "we don't serve neutrinos here", the neutrino says "it's okay, im just passing through" a virus particle walks into a bar, the bartender says "we don't serve viruses here", the virus replaces the bartender and says "now we do" two bacteria walk into a bar, the bartender says "we don't serve bacteria here", the bacteria say "it's okay, we're staph" Schrödinger's cat walks into a bar, and doesn't