"Some memories come with a very compelling sense of truth about them. And that happens to be the case even with memories that are not true." -- Daniel Kahneman

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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