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Comparisons between the inner world and the outer world have been frequently drawn by philosophers, nature writers, and visual artists. For example, "seeing the universe in a grain of sand" is a well-known aphorism. The number of neurons in your brain has been compared to the number of stars in the Milky

Everyone knows someone who has undergone hip or knee replacement. These surgeries are no longer exclusively performed on older persons and are now not uncommon procedures for many patients with persistent, significant hip or knee pain. Problems that lead people to be willing to undergo joint replacement