There are several thousand different phobias. What people have not managed to attribute a threat to: sharp objects, dull knives, black cats, white crows, beautiful women, just women, in general everything feminine, flowers and plants. Oh, they cause allergies! A fashionable disease these days. Some people are allergic to literally everything, including themselves. An obsessive fear that cannot be explained forces one to find danger in literally all elements: from air and fire to metal and wood. The fall of one tree can lead to events that few would have thought of predicting before. And few people notice how people themselves resemble trees, and human society sometimes resembles either a cultural park or a blooming garden, or a dense forest or even a wild jungle.