If somebody out there has some strong reason why the above is
misguided, I'd be interested in hearing it.
VERY few Xeon transistors are used per clock tick. Many, many, MANY more
brain synapses are firing at a time.
----- Original Message -----
From: "Eric Baum" <[EMAIL PROTECTED]>
To: <[email protected]>
Cc: <[EMAIL PROTECTED]>
Sent: Friday, July 14, 2006 12:07 PM
Subject: **SPAM** [agi] Processing speed for core intelligence in human
brain
Warren Smith recently pointed out that if you regard a CMOS transistor
pair as roughly comparable to a synapse, and assume rather generously
that synapses can continuously operate at 400 Hz, a 3.6 GHz Xeon with
286E6 transistors has processing power .5 X 3.6 X 286 X E(9+6)=5.1 E17
whereas a human brain with between 1E12 and 1E15 synapses
has "clearly inferior raw power" 4E14 - 4E17 bit-ops/second.
"Plus the Xeon bit-ops are better understood and probably more
reliable than the human bit-ops. These bit-op/sec estimates are of
course merely upper bounds on what is achievable in practice", because
your brain would fry if all synapses fired at 400hz simultaneously,
and likewise the Xeon.
If somebody out there has some strong reason why the above is
misguided, I'd be interested in hearing it.
On a related subject, I argued in What is Thought? that the hard
problem was not processor speed for running the AI, but coding the
software, and estimated that evolution had gone through very roughly
10^35 viruses since the dawn of time, as very rough estimate of raw power
available to it for software discovery.
Dan Fischer did a similar physicist's estimate, coming up with 10^35
bacteria.
However, Warren has recently done some digging
on the subject, and come up with what seems to be a better estimate
that 10^44 bacteria have lived on Earth.
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