Do colours appear the same to everyone? Is dopamine good for you and serotonin bad? How heavy was Einstein’s brain? Does the size of your brain say anything about intelligence? Can you feel pain in your brain? Are computers smarter than humans? Can a brain scan show whether people are already producing their language response while their conversation partner is still speaking? Why do people still receive electroshock therapy? Why do Dutch people say “I have sawdust in my head” when they do something stupid? How is it that some people see an object as blue, while others say that same object is green? Which brain region is the most important?