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"I kind of take it for granted that our great-grandchildren will regard us as a sort of precursor species. That they won't think of us as human and if we could see them, we probably wouldn't think of them as human either."
- William Gibson

Merc-Pool  
  A device that stores information in vibration patterns on a mercury surface.  

Simpson looked up from a merc-pool file as he passed. "Boss wants you, Lije."

"I know. R. Sammy told me."

A closely coded tape reeled out of the merc-pool's vitals as the small instrument searched and analyzed its "memory" for the desired information stored in the tiny vibration patterns of the gleaming mercury surface within.

From Caves of Steel, by Isaac Asimov.
Published by Galaxy in 1953
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