Creativity and intelligence go hand in hand. Be it science or arts, innovation needs creative thinking. The difference is man-made. You have two hemispheres in your Cerebrum. That makes you capable of understanding and grasping concepts fluidly.
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How good you are depending on how you train your brain. Sharing what I learned from being a doctor for the last 20 years and a writer since 2014 You must give yourself a chance. You don't have to choose between STEM and Art. You can enjoy both