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Brain has a von Neumann architecture
SupportiveArgument
1
#448
Three features of Von Neumann architecture also characterise processing in brains: 1) processing is sequential; 2) symbol strings are stored and accessed at specific memory addresses; 3) there's a central processing unit that controls processing.
Note
: For more on the assumption of a central control see "Searle assumes a central locus of control" Map 4, Box 75.
CONTEXT
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Artificial Intelligence »
Artificial Intelligence
Artificial Intelligence☜A collaboratively editable version of Robert Horns brilliant and pioneering debate map Can Computers Think?—exploring 50 years of philosophical argument about the possibility of computer thought.☜F1CEB7
▲
Can computers think? [1] »
Can computers think? [1]
Can computers think? [1]☜Can a computational system possess all important elements of human thinking or understanding? ☜FFB597
▲
Yes: physical symbol systems can think [3] »
Yes: physical symbol systems can think [3]
Yes: physical symbol systems can think [3]☜Thinking is a rule governed manipulation of symbolic representational structures. In humans, symbol systems are instantiated in the brain, but the same symbol systems can also be instantiated in a computer. ☜59C6EF
▲
The Biological Assumption »
The Biological Assumption
The Biological Assumption☜The brain is the hardware (or wetware) on which the software of the mind is run. Thinking is a symbolic process that is implemented in the neurons of the brain and that can also be implemented in the circuits of a digital computer.☜98CE71
■
Brain has a von Neumann architecture
Brain has a von Neumann architecture☜Three features of Von Neumann architecture also characterise processing in brains: 1) processing is sequential; 2) symbol strings are stored and accessed at specific memory addresses; 3) theres a central processing unit that controls processing.☜98CE71
●
Brain accesses information by content not memory address »
Brain accesses information by content not memory address
Brain accesses information by content not memory address☜Humans rapidly access memories via their contents; eg presidential memories are accessed by information about the president—name, face etc—not by an explicit address. Connectionist networks and brains have content addressable memories of this type.☜EF597B
●
Processing in the brain is distributed »
Processing in the brain is distributed
Processing in the brain is distributed☜Processing in the brain is not mediated by some central control. Neural processing is distributed -- i.e. many regions contribute to the performance of any particular task.☜EF597B
●
The brain processes information in parallel »
The brain processes information in parallel
The brain processes information in parallel☜Von Neumann machines process information sequentially, one bit at a time. The brain receives and manipulates massive amounts of information at the same time, in parallel.☜EF597B
►
Searle assumes a central locus of control »
Searle assumes a central locus of control
Searle assumes a central locus of control☜Searle presupposes any simulation of a native Chinese speaker will involve a central locus of control that manipulate symbols without understanding Chinese—but hasnt shown that a model without a central locus of control wouldnt understand Chinese.☜FFFACD
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Entered by:-
David Price
NodeID:
#448
Node type:
SupportiveArgument
Entry date (GMT):
7/5/2006 10:33:00 AM
Last edit date (GMT):
10/2/2009 9:20:00 AM
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