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eli_sennesh comments on Open Thread, Jun. 8 - Jun. 14, 2015 - Less Wrong Discussion
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How much data for an uploaded mind?
What are your confidence levels that any resolution of brain-scans will be enough to create an emulated human mind? Or, put another way, how much RAM do you think an emulated mind would require to be run?
Partially relatedly, do you know of any more useful trend-lines on how fast brain-scanning technology is improving over the decades than http://www.singularity.com/charts/page159.html and https://imgur.com/cJWmOd1 ?
Well, if you haven't bothered to form a genuine theory of how the brain works that compresses out the biological noise... I'd guess something along lines of the last estimate I heard: multiple petabytes.
How many is 'multiple'? A dozen? A hundred?
Where did you hear this estimate from?
As a fermi estimate, the human brain has on the order of 10^11 neurons, each of which has on the order of 10^4 synapses. If we're able to compress the information about each synapse - its location, chemical environment, connections, action potentials, etc. - into a kilobyte (10^3 bytes) (wild guess), this gives us 10^18 bytes for a human brain. Or, about 1 exabyte (1000 petabytes).