Some people believe that intellectual ability is purely genetic or fixed. This is a myth. Research now shows that the brain is like a muscle; the more a person applies it and struggles, the more it grows. People who learn to recognize this fact about their own brain develop a ‘growth mindset’ and are able to persevere and achieve more. This short video is a commercial for the Khan Academy but speaks to the importance of struggle to truly learning and understanding rather than memorizing and forgetting.