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CogSci 200 Lecture 13 (computation, Turing test for intelligence, computational theory of mind)
Terms in this set (13)
Computational theory of mind
Makes a foundational claim about mind/brain computation in cognitive science
"thinking - all mentation - is a kind of computation"
aka all mentation is computation
Computability vs Conceivability
Not every conceivable function is computable
Functions that cannot be solved using a finitely-specified algorithm are conceivable but not computable
- the halting problem is not computable
Multiple realizability of mental states
Mental states or processes are multiply realizable. Any mental state or process can be implemented in multiple different physical substrates. Mental states are realized in, but not identical to, physical states
The mind-body problem is not a problem if
We understand thinking as a kind of computation that is implemented by the brain (which is made of physical matter)
The very same function can be computed by multiple distinct algorithms
An algorithm can be realized in multiple different physical substrates
The Turing test for intelligence
All that matters for intelligence is input-output equivalence.
Has to guess which is a human and which is a machine
1 - The human behind the screen is intelligent
2 - The computer is (more or less) input-output equivalent to the human (since a competent judge can't tell the difference between the two)
3 - Therefore, the computer is intelligent
What can the computational theory of mind explain?
1 - What are the primitive operations that all minds execute?
2 - Why are our minds so flexible?
3 - What is the relationship between minds and brains?
4 - Could a creature made of very different stuff, say ectoplasm, have a mind like ours?
What are the primitive operations that all minds execute?
The primitive operations carried out by Turing Machines
Why are our minds so flexible?
Our minds may instantiate (or approximate) Universal Computation
What is the relationship between minds and brains?
Mental states are realized in, but are not identical to, brain states
Could a creature made of very different stuff, say ectoplasm, have a mind like ours?
Yes, if their minds execute the same (or sufficiently similar) algorithms
Computational theory of mind can't explain
Emotions and consciousness
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