On 7/7/2021 10:09 AM, Jason Resch wrote:
On Wed, Jul 7, 2021 at 11:53 AM 'Brent Meeker' via Everything List
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On 7/7/2021 2:24 AM, Jason Resch wrote:
On Wed, Jul 7, 2021, 12:14 AM 'Brent Meeker' via Everything List
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On 7/6/2021 6:50 PM, Jason Resch wrote:
On Tue, Jul 6, 2021, 9:39 PM Bruce Kellett
<bhkellet...@gmail.com <mailto:bhkellet...@gmail.com>> wrote:
On Wed, Jul 7, 2021 at 11:29 AM Jason Resch
<jasonre...@gmail.com <mailto:jasonre...@gmail.com>> wrote:
On Tue, Jul 6, 2021, 4:07 PM 'Brent Meeker' via
Everything List <everything-list@googlegroups.com
<mailto:everything-list@googlegroups.com>> wrote:
On 7/6/2021 10:34 AM, Jason Resch wrote:
On Tue, Jul 6, 2021 at 12:27 PM 'Brent Meeker'
via Everything List
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And you're never going to find a being that
behaves intelligently based on information
that can be quantum erased.
You need only a quantum computer with enough
qubits.
Can you prove that? How does this quantum
intelligence ever arrive at a definite decision?
Prove? No. But I think I can justify it:
1. Quantum computers are Turing equivalent, they can
compute anything a classical computer can.
2. Human brains are believed to operate according to
physical laws, all known of which are computable.
3. Humans are conscious.
4. By any of: Chalmers's principle of
"Organizational invariance", or "multiple
realizability", or the "Generalized Anti-Zombie
Principle", or the "computational theory of mind", a
functionally equivalent computation to that of a
conscious human brain will be equivalently conscious
to that brain.
5. Quantum computers are reversible.
By 1 & 2, a quantum computer can simulate a human
brain. By 3 & 4, such an emulation will be
conscious. By 5 any computation performed by a
quantum computer can be quantum erased by reversing
the circuit back to its starting state.
It reaches a definite decision by virtue of
completing its processing before ultimately being
reversed. This prevents an outside observer from
learning the decision, but it's made nonetheless
during the course of the processing.
How do you know that it has reached a definite decision?
Without having it print out some irreversible record? If
it prints out a (pseudo-)classical record, the initial
state is not recoverable.
Bruce
By either:
1. Analyzing the circuit
But the question is whether such a circuit is possible.
Do you disagree with any of the five premises I defined above? If
not do you see a flaw in my reasoning or conclusions? If not,
then why shouldn't such a circuit be possible?
This what I find dubious: /"It reaches a definite decision by
virtue of completing its processing before ultimately being
reversed. This prevents an outside observer from learning the
decision, but it's made nonetheless during the course of the
processing." / First, I doubt that it both reach a definite
decision and have that quantum erasable.
If you doubt it reaches a certain definite decision state, you could
interrupt the quantum computer midway through its processing and
entangle yourself with one of its superposed states to verify that the
AI/mind was in a state of having reached a definition conclusion.
?? If I do that by entangling with a superposition, then I either
collapse it or "I'm of two minds".
Second, you've made "decision" something internal. Intelligence
requires acting in the world.
The environment for this AI are the qubits initialized as the input to
the mind. It acts in this world by performing actions that ultimately
affect the output of this quantum computation.
My original point was, "And you're never going to find a being that
behaves intelligently based on information that can be quantum erased."
In the environment A=0, B=0, and any other set of A, B values the
algorithm outputs B=1 and then erases it. Is this intelligent behavior?
Brent
2. Having the circuit do something useful and verifiable (as
in my factoring example)
How would you know that had a causal connection to the
quantum erasable knowledge?
This is why I had the information pass through the "AI function"
before being used in Shor's algorithm. That way there was a
causal connection with the result that would be communicated to
the outside world.
3. Having the circuit output that it did observe a definite
value but without reporting which value it observed (as in
Deutsch's original example)
Again, how do you know such a circuit is possible? Most
quantum computations only produce probable answers in a
decohered readout.
Ignoring the AI aspect this is a simple and non probabilistic
circuit:
1. Initialize qubit A to 0
2. Initialize qubit B to 0
3. Put qubit A into superposition of (0 and 1) via Hadamard gate
4. Apply Controlled NOT gate to (A, B) using A as the control bit
to read/copy the bit value of A to the state of B. (B now has a
definite value of 1 OR it has a definite value of 0)
5. Apply Pauli-X (NOT gate) to (B) to flip the bit value of B (it
is now opposite of A).
6. Apply Controlled NOT gate to (A, B), to have the effect of
computing (A XOR B) and storing the result in B. If A was
measured in step 4 as 0, B will now be 1. Otherwise, if A was
measured in step 4 to be 1, B will now be 1. We now have evidence
in qubit B that A was measured to be a 1 or a 0, but no longer
have the which way information in B.
8. Invert the Hadamard gate applied to A to restore it to 0.
9. Read the qubits, while initialized to A = 0, B = 0, you will
now find A = 0, B = 1.
I don't see that 6 is a measurement of anything. It's just
creating a contradiction as way of setting B=1 regardless of the
value of A.
It became 1 by virtue of some causal relations, unless you think it
arrived at the value of 1 "reasonlessly".
Jason
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