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Philosophy of Computing and Information

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Quantum Computing: Myth or Reality?

"What I like most in science is science-fiction"
Unknown from the web.

Schrödinger's cat is probably one of the most famous pets in history, right beside Cerberus and Pegasus. I must confess that quantum computing remains largely a mystery, and while researching the subject I could not but notice the lack of any concrete information about what it really entails.
Take the concept of qubit. It has mathematically been defined, and, as far as I can see, mathematicians agree on the definition. Which is certainly good enough for me. But then I wonder, how would a quantum gate or circuit look like?
Well, if you ask this question on the Internet, you get treated to more mathematical formulas.
A very intriguing concept is that of superposition. I have great difficulty in grasping the reality behind it. Let us assume that a bit can be both 1 and 0 at the same time. What good will it do to us if we are not able to get a clear answer after reading it? In other words ... (read more)
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My reasons:
1. Accoding to relative information formula I=log[P(ei|hj)/P(ei)] in classical information theory, if P(ei|hj)2. A lie or wrong prediction is worse than a tautology or contradiction. For example, after master tells kitchener  "Three guests will come to have dinner", actually no guest comes. The master's saying is worse than a tautology or contradiction, because it will bring loss. Yet, according a tautology or contradiction, the kitchener either does nothing or asks for better prediction. 
3. If we code P(E|hj) according to a wrong prabability prediction or likelihood, such as P(E| hk is true) (actually hypothesis hk is wrong), the average codeword length will be H(E|hk)=- sum i P(ei|hj)logP(ei | hk is true)>H(E|hj)- sum i P(ei|hj)logP(ei|hj), which means that the saved average codeword length is negative.

I modify the formula  I=log[P(ei|hj)/P(ei)] into I(ei;hj)=log[P(ei|hj is true)/P(ei)]=log[T(hj|ei)/T(hj) 
where  P is statistical probability, and T(hj|ei) is the true value of p ... (read more)
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Your article is very interesting.

In the same spirit I propose a more modal formalism to speak about "true announcements" and "learning" :

This representation allow to make the difference between a world before and after the learning act. Then it becomes easier to deal with expression about knowledge and learning.


Does anyone think that the subcategories for this category need to be refined? It seems that many entries can be shoved into Concepts of Information, though I am not sure if this is optimal.

For example, there are many articles focusing on Logic and Information. Should these be lumped together with general articles concerning conceptions of information? Or is it possible to have a cross-reference to another section under the logic category.

Another example: there are many articles concerning Information and Epistemology. Should there be a subcategory for this? There is another related section for this, namely:

Philosophy of Mind > Intentionality > Naturalizing Mental Content > Information-Based Accounts of Mental Content.

- Simon
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The Philosophical Registry is a very interesting project on its own, independantly of any use other than observing and participating in the systemic life of a philosophical community. However, it could lead to various uses and raise ethical questions : suppose that in few years it has grown enough to serve as a basis for the implementation of a philosophical version of the Turing Test, then, even a vote would not suffice to dissipate the ethical issue if it had not been addressed in the beggining.

There may be also issues related to preliminary theories on the nature of philosophy - specially in the last paragraph of the article - that could make this initial forumulation unsuited for an independant method of assessment. What if the new Lao Tzu gets the poorest evaluation?

This exciting project diserves that its ethical aspects receive thorough attention and prospective.



A link to an article going in the same direction:
This guy apparently has some theories about socio-technical systems and on academic publishing as a special case of such a system - see for example:

Just browsing First Monday for the link I've also encountered

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Hello.  I would like to know what people think of this paper.  It is primarily a defense of computationalism against Bishop's use of the Fading Qualia argument to back his claim that "Counterfactuals Cannot Count".  It also constitutes an attack on the Fading Qualia argument in general, and can be taken to support an elimitivist view about qualia.

This short paper grew out of an email exchange which was really about mathematical platonism, in which I argued against the claim that partial brains (which can tend towards nonexistent brains) would have to have the same consciousness as a full brain.  I wrote it up as an entry for the Consciousness Online web conference, but it was not chosen.

I would also appreciate any suggestions regarding whether and where to submit it for publication. Thanks.
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