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Would your brain run out of storage space if you could live forever?

No, say our readers, because that isn’t how your brain works: memories are constantly being deleted to make way for new ones

3 July 2024

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If someone could have their life extended with no limit, would their brain eventually run out of storage space?

Hillary Shaw
Newport, Shropshire, UK

Memory storage can’t be in units of less than one atom, so if our brains stored memories linearly, like book text, at some point it would be full.

However, we don’t do this. We have memory hierarchies, so I don’t need to remember everything in my encyclopedias, just where I put them, what concepts/words those 26 or so little characters make and the order of the alphabet.

Likewise, I can write my life events down in…

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