Do colours appear the same to everyone? How do brain cells communicate with each other? Why do people still receive electroshock therapy? Why do brain tissues have different colours? Is dopamine good for you and serotonin bad? Why do Dutch people say “I have sawdust in my head” when they do something stupid? What is already known about long covid and the brain? Can you feel pain in your brain? How is it possible that we can hear either ‘green needle’ or ‘brainstorm’ whilst the audio fragment remains the same? Can I train plasticity?