From: "John Clark" <jonkc@worldnet.att.net> To: <extropians@extropy.com> Subject: Re: Lilliputian Posthumians Date sent: Thu, 22 Oct 1998 12:40:53 -0400 Send reply to: extropians@extropy.com
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> Joe E. Dees <jdees0@students.uwf.edu> on October 21, 1998 Wrote:
>
> >Each neuron has up to 40,000 connections with other neurons, and
> >there are more than 30 billion (not million) of them in a human brain
> >weighing approximately 3 1/2 pounds. As complex and miniaturized
> >as it already is, and considering that the interaction of genetics and
> >experience has endowed each brain with a unique (although similar)
> >connection pattern, the difficulties involved in further shrinking them
> >are daunting, to say the least.
>
> Difficult yes, impossible no. Hans Moravec figures it would take 10^13
> calculations per second to emulate a human brain. To build one of Drexler's
> nano computers that could perform 10 ^13 calculations per second you'd
> need about half an ounce of matter, mostly of carbon, and about 15 watts
> of energy.
>
> John K Clark jonkc@att.net
>
>
Obtaining the unpatterned materials is easy. Arranging them in a
functional configuration is the hard part. Joe
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>
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