[Bekenstein bound](https://en.wikipedia.org/wiki/Bekenstein_bound) limit from a physics perspective:
Scroll to just before the footnotes at the end…
This means that the number O=2^{I} of states (bits) of the human brain must be **less than** ≈10^(7.8*10^41).
Note: This is 10 raised to the 7.8*10^41 power, where for comparison a terabyte is 8*10^(12), and a googol is 10^(100). Or in long form, 10^(780,000,000,000,000,000,000,000,000,000,000,000,000,000) bits.
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