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Q&A

Can "photographic memory" evolve?

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According to multiple reputable sources, the idea of "photographic memory" in humans is a myth. While some people may be unusually adept at certain things involving memory - like remembering the layout of a chess board, or where any given card is within the deck - no one can actually recall images of everything they see with perfect accuracy.


Here's my criteria for "an organism with photographic memory":

Must's

  • Organism must be organic (not a robot being called an "organism")
  • Organism must be natural (no creation of a new species by an advanced race, etc)
  • Organism must be able to recall events it has witnessed in the exact detail they were witnessed in
  • Answers should be relatively

Must Not's

  • Memories must not fade (they have to be re-callable years later)
  • Memories must not change over time (as human memories may after multiple recollections)

Up to you

  • The level of "intelligence" - there is no need for complex emotions or language, although that might be nice
  • The sensory methods of the organism - if it can't "see" in exchange for "photographic" echolocation, go for it

Noting the above criteria, can an organism evolve perfect photographic memory? If so, how would it do so? And if not, why?

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This post was sourced from https://worldbuilding.stackexchange.com/q/63093. It is licensed under CC BY-SA 3.0.

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