Have you ever revisited a favorite childhood vacation destination? Before the visit you probably had only hazy memories of it. But once you got there—walking down the streets, taking in the sights, sounds and smells—the memories came flooding back. You may have felt excited, wistful or perhaps even a little bit in love. Returning to that context encouraged your mind to recall a host of related memories. But it’s not just places that trigger memories. The world is full of such triggers. Has a song ever sparked a cascade of emotionally charged memories? Or the smell of flowers or freshly baked
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