William here with a science fun fact! I had noticed that some furniture in my house migrated quite far from its original position, while other stayed put. It occurred to me that this may be due to the wave function of a quake. Though the face and back of a wave have the same energy, wave movement endows the face with more power, and thus objects would tend to move away from the epicenter. I ran this theory by a Kumadai mathematician pal, who agreed. This explains why furniture closest to the epicenter ended up in the middle of the room (if it didn’t fall over), while that against the far wall stayed against the wall. Think about your own situation for more fun!