Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons? 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? Why do people still receive electroshock therapy? Can you unlearn sleeping in the dark? Can you feel pain in your brain? What happens in the brain when you take psychedelics? What is the impact of speaking multiple languages on the brain? Which brain region is the most important? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia?