Your Right Hand Is 550 Million Years Old. Here’s Why That Changes Everything.
The next time you reach for your coffee with your right hand, pause. You’re doing something that’s been happening for longer than trees have existed. A 550-million-year-old fossil of Spriggina floundersi proves that right-handedness is not a cultural quirk but an ancient evolutionary strategy for neural efficiency. Left-handedness? That’s the losing side of an arms race that started before brains had two hemispheres.