Why do children outperform adults in the game of ‘concentration’? Why do some people remember their dreams and others do not? Are computers smarter than humans? Can you unlearn sleeping in the dark? Is it true that you can be ‘left-brained’ or ‘right-brained’? Do colours appear the same to everyone? How does speaking multiple languages impact the brain? What is the impact of speaking multiple languages on the brain? Can I learn from a text by listening to it while I sleep?  Why do Dutch people say “I have sawdust in my head” when they do something stupid?