Last night, I settled down in my favorite armchair in the living room to read a book filled with spooky stories. Outside, the wind was blustering through the trees. Because my sense of hearing is unusually acute, I could hear dry twigs and branches creak, some as if they were about to snap. At one point, just as I was completely absorbed in an especially eerie story about a ghostly shape that appears night after night holding up a lantern on a railroad track, something seemed to enter the room. At first, I froze up, feeling completely numb and unable to move. After a moment, however, I was able to regain control of myself and looked over my shoulder to the right. That’s when I saw that I had been right—something had entered the room. Although it did have a ghostly shape, it turned out not to be a ghost. Instead, it was a pair of long curtains that had billowed out when a gust of wind blew through the partially open window.