perm filename OLIVER.XGP[LET,JMC] blob
sn#128538 filedate 1974-11-05 generic text, type T, neo UTF8
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␈↓␈↓↓␈↓α␈↓β␈↓∧␈↓∂␈β↓↓␈↓∂S␈↓α
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␈β↓Q␈↓ ¬ STANFORD UNIVERSITY
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␈↓β␈↓ ¬_STANFORD, CALIFORNIA 94305
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␈↓∧
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ARTIFICIAL INTELLIGENCE LABORATORY␈↓
+ Telephone:
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COMPUTER SCIENCE DEPARTMENT␈↓
+415-497-4430
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␈↓␈↓ ¬l18 October 1974
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Bernard M. Oliver
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Research and Development
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Hewlett-Packard Company
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1501 Page Mill Road
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Palo Alto, California 94304
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Dear Barney:
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␈↓ α_Thanks␈αfor␈αthe␈αdraft␈αof␈αyour␈αcomments␈αon␈αO'Neill.␈αI␈αhave␈αno␈αcomments␈αon␈αit␈αyet␈αnot␈αhaving
␈↓ ↓H
␈↓ ↓Hhad␈αtime␈αto␈αread␈αit␈αin␈αdetail,␈αbut␈αwhen␈αI␈αthought␈αabout␈αit␈αpreviously,␈αI␈αgot␈αeven␈αhigher␈αcosts␈αfor␈αhis
␈↓ ↓H
␈↓ ↓Hscheme␈α
than␈α
you␈α
did.
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␈↓ α_Here␈α≠is␈α≠a␈α≠beginning␈α≠of␈α≠a␈α≠counter-fantasy␈α~-␈α~the␈α~austere␈α~space␈α~colony.␈α~Liquidating
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␈↓ ↓HHewlett-Packard␈αwould␈αjust␈αabout␈αpay␈αfor␈αit.␈αThe␈αpart␈αabout␈αhow␈αmuch␈αsteel␈αis␈αrequired␈αto␈αcontain
␈↓ ↓H
␈↓ ↓Hthe␈α
air␈α
is␈α
calculated␈α
by␈α
equating␈α
pdV␈α
for␈α
a␈α
small␈α
expansion␈α
of␈α
a␈α
sphere␈α
with␈α
tadA␈α
where␈α
t␈αis␈αthe
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␈↓ ↓Htensile␈αstrength,␈αa␈αis␈αthe␈αwall␈αthickness␈αand␈αA␈α=␈α4πr␈↓β2␈↓␈αis␈αthe␈αarea␈αof␈αthe␈α
steel␈α
sphere.␈α
I␈α
suppose␈α
that␈α
it
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␈↓ ↓His␈α
not␈α
legitimate␈α
to␈α
identify␈α
the␈α
t␈α
of␈α
that␈α
kind␈α
of␈α
expansion␈α
with␈α
the␈α
tensile␈α
strength␈α
of␈α
the␈α
steel␈α
made
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␈↓ ↓Hinto␈α
a␈α
bar,␈α
but␈αI␈αdidn't␈αknow␈αwhat␈αelse␈αto␈αdo.␈αThe␈αrest␈αof␈αthe␈αnumbers␈αare␈αtotal␈αguesses␈αexcept␈αthe
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␈↓ ↓Hpart␈α
about␈α
the␈α
chickens.␈α
A␈α
chicken␈α
grows␈α
to␈α
four␈α
pounds␈α
from␈α
an␈α
egg␈α
in␈α
seven␈α
or␈α
eight␈α
weeks,␈αso
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␈↓ ↓Hassuming␈α∞you␈α∞can␈α∞live␈α∞on␈α∞a␈α∞chicken␈α∞a␈α∞day␈α∞and␈α∞that␈α∞the␈α
chicken␈α
grows␈α
linearly,␈α
person␈α
requires␈α
a
␈↓ ↓H
␈↓ ↓Hbiomass␈α
of␈α
(56␈α
days)␈α␈↓↓times␈↓␈α(2␈αpounds␈αof␈αchicken)␈α=␈α112␈αpounds.␈αThe␈αrest␈αdepends␈αon␈αhow␈αfast␈αyou
␈↓ ↓H
␈↓ ↓Hcan␈α
recycle␈α
the␈α
human␈αwaste,␈αthe␈αchicken␈αdroppings,␈αand␈αthe␈αchicken␈αfeathers␈αand␈αbones␈αback␈αinto
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␈↓ ↓Hsomething␈αthe␈αchlorella␈αcan␈αuse.␈αThe␈αchlorella␈αthemselves␈αcan␈αdouble␈αtheir␈αmass␈αin␈αhalf␈αan␈αhour,␈αso
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␈↓ ↓Hyou␈α∞don't␈α∞have␈α∞to␈α∞keep␈α∞much␈α∞of␈α∞that␈α∞around␈α∞to␈α∞feed␈α∞the␈α∞chickens.␈α∞Naturally,␈α∞it␈α∞would␈α∞be␈α∞nice␈α∞to
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␈↓ ↓Hhave␈α↔other␈α↔food␈α↔sources␈α↔around␈α↔to␈α↔provide␈α↔variety;␈α↔they␈α↔only␈α↔have␈α↔to␈α↔average␈α↔the␈α⊗same
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␈↓ ↓Hmass-efficiency.␈α
Eating␈α
the␈α
chlorella␈α
directly␈α
would␈α
be␈α
very␈α
efficient.
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␈↓ ↓H
␈↓ α_Any␈α
comments␈α
or␈α
help␈α
in␈α
elaboration␈α
of␈α
the␈α
austere␈α
space␈α
colony␈α
would␈α
be␈α
welcome.
␈↓ ↓H
␈↓ ↓H
␈↓ α_I␈α
suppose␈α
there␈α
is␈α
a␈α
30%␈α
probability␈α
that␈α
the␈α
social␈α
system␈α
will␈α
get␈α
oppressive␈α
enough␈α
in␈α
the
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␈↓ ↓Hnext␈α
30␈α
years␈α
that␈α
there␈α
will␈α
be␈α
a␈α
need␈α
for␈α
it.
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Best regards,
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John McCarthy
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Director, Artificial Intelligence Laboratory
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Computer Science Department
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␈↓ ↓HP.S.␈α∩The␈α⊃␈↓↓Project␈α⊃Independence␈↓␈α⊃statement␈α⊃was␈α⊃well␈α⊃received␈α⊃and␈α⊃Stanford␈α⊃has␈α⊃got␈α⊃a␈α⊃number␈α⊃of
␈↓ ↓H
␈↓ ↓Hrequests␈α
for␈α
it␈α
mainly␈α
from␈α
companies␈α
concerned␈α
with␈α
energy.
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JMC;paw
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oliver.le1[let,jmc]:SU-AI
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