Today I saw a ghost on my couch. It was four centimeters in diameter and furry—obviously a bug in its past life, coming back to haunt me. I immediately scooted over to the other cushion to avoid any possible ghost-bug possession. It was the perfect size to crawl into my ear and eat my brain. At second glance, I noticed it wasn’t moving. This gave me some confidence and I investigated further. Turns out, it was a ball of white lint. So we’re safe. For now.