What is fainting? Why do Dutch people say “I have sawdust in my head” when they do something stupid? Why do some people remember their dreams and others do not? Do colours appear the same to everyone? Can I learn from a text by listening to it while I sleep?  What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? What is already known about long covid and the brain? What causes Alzheimer’s disease? Why is some information stored so quickly in the brain, while other information takes much longer? When are we able to solve MS?