Halley's Comet, Or Why We Need Photographs

We say pictures can't replace memories, but when Halley's Comet last swooped across the sky, many of us were too young to care. Our next chance to see it - about 50 years from now - will be probably be our last.

What do we do when pictures of events we barely recall are all we have?

Memory [Forever] is our week-long consideration of what it really means when our memories, encoded in bits, flow in a million directions and might truly live forever.

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