Memory is malleable, dynamic and elusive. When we tap into our memories, where’s the line between fact and fiction? How does our memory play tricks on us, and how can we train it to be more accurate? In this hour, TED speakers discuss how a nimble memory can improve your life, and how a frail one might ruin someone else's.

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Tags:  ted radio hour,  guy raz,  memory,  scott frazer,  forensic psychology,  eyewitness reports,  behavioural economics,  Daniel Kahneman,  happiness,  Joshua Foer,  US Memory Championship,  World Memory Championship