Andrew M

After measurement, the spin state will be definitely up or down, and not in superposition. The point of quantum computing is that computation can be d...

Yes - see the ENIAC example link in my initial post (which showed 30 tubes). I'm referring to the different states that a single qubit can be in. Ever...

Reminds me of Marvin, the android from Hitchhiker's Guide to the Galaxy. A brain the size of a planet, and they used him to open doors...

:up: Numbers can be stored in a binary representation about 3 times more efficiently than in a decimal representation (since 2^3 is approximately 10),...

Earlier computers represented numbers in decimal. Here's an example. So, consider adding 4 to 128. 8 + 4 modulo 10 = 2. So only the bottom two vacuum ...

No problem. :up:

I'm not sure whether your comment was intended for RussellA or myself. But my position is neither direct (naïve) or indirect realism - I reject the an...

My view is that knowledge comes from experience. What instances did you have in mind? Indeed. A nice point of agreement to end with!

Well-established or not, the 'binding problem' has dualist premises (as with the 'hard problem of consciousness'). It's not just me pointing it out. S...

Well, you're assuming there is a 'binding problem' to be solved, but this is an artefact of a representationalist scheme. See the photograph example b...

That doesn't seem right to me. I experienced the excitement of New York in New York. I had a memorable experience at the restaurant. I gained experien...

:up: So I'm curious whether you think that statement is compatible with the view that experience is grounded in the world, understood as that which we...

Because we're not perceiving either a neural or a mental representation of the tree, we're perceiving the tree itself. Further, the 'binding problem' ...

Maybe because you conceive of perception differently to B&H (and, I might suggest, ordinary language users). Color, form and dimensions are characteri...

They wrote the influential book "Philosophical Foundations of Neuroscience" so they've given these issues serious consideration. To make an analogy to...

Maybe that's because you think in representationalist terms. ;-)

As I see it, the issue is a difference of conceptual models. On a representationalist view, there is a separation of (subjective) experience from the ...

You say it as if you believe it. But if the conclusion fails empirically (as Feldman's paper claims), then that raises questions about the premises. C...

Yes, that's the real issue. As B&H say: The above B&H quote doesn't assume a binding problem. From the passage you quoted (italics mine): The issue, a...

The 'binding problem' assumes there's a representation or image that needs 'binding'. But that's not the case, as Bennett and Hacker explain:

Certainly it's important for communication and co-operation. But it's worth noting that we have language not just for agreement and disagreement (i.e....

:up: :up: So the phrase "veil of perception" has a historical connection with certain 17th century metaphysical views that deny any direct world-invol...

I'm sure that's so. However when we see a red flower, do we see it in the brain, or in the mind, or in the garden? I'm not suggesting this applies to ...

Ordinary language allows the revising of claims in the light of new discoveries. One can be mistaken about what they think they're perceiving, e.g., t...

It's the way we ordinarily use our words. That thing there that I'm pointing to (cue, a red rose in a vase on the table) is what I understand a red fl...

Cool. I'd just add that it doesn't then follow that we perceive images or, alternatively, respond to images. Instead we respond to things that we perc...

I agree that we respond to things that we perceive (such as red flowers). But I was referring to KK's "image of 'red flower'". Where does that fit int...

It's the assumption of an image between the perceiver and the object that suggests the dualism. That's the Cartesian theater - that we're only ever lo...

It's possible to mark which slit a photon goes through and then later erase that mark. With a stream of marked and then unmarked photons, an interfere...

Yes, I was envisaging a wave function that just approximates those statistics. Also, welcome to the forum! And what is structure? I notice you give a ...

Perhaps this is what you're looking for?

It seems to me that you're thinking of a superposition as a kind of law (like F=ma). It's not. It's just a particular kind of state that a quantum sys...

You're welcome! What in particular were you not satisfied with? Sure. The minus sign represents a 180 degree phase shift which differentiates the two ...

It's expressed in rules R1 and R2. Popular science writing is both a blessing and a curse...

For an English translation, consider a coin. It has two possible states: heads or tails. There are three operations we can perform. O1. Place the coin...

Yes, and that's also Schrödinger's position in the "Are the variables really blurred?" quote above. It's worth noting that Aristotle formulated both a...

Yes, Schrödinger posed it to highlight the consequences of accepting a "blurred reality" at the microscopic level. Specifically, that we should then a...

The hullabaloo is about how to interpret the math, not the math itself. Many Worlds is closest to treating a superposition as a conjunction with the c...

The issue is only that something was lost in the translation from math to English. Paraphrasing SMBC, "Quantum superposition... It doesn't mean spin-u...

OK, you mean the measurement problem - I wasn't sure. Yes - the difference is that unitary evolution continues and so doesn't require a change to the ...

Non-local theories need to be reconciled with relativity. Hidden variables are constrained by no-go theorems (e.g., Bell's theorem). What is the unita...

I suspect for pragmatic reasons. Copenhagen was seen as the minimalist interpretation. It left the math alone (with the exception of the collapse post...

Yes. Then, in Deutsch's thought experiment, Wigner performs a unitary operation that undoes the friend's measurement while preserving that record. The...

So, on your view, Deutsch's thought experiment fails? For reference, Deutsch's thought experiment is in section 8 (p32) with the interference experime...

Yes, it's just a thought experiment that shows the implications of QM at a macroscopic level. But this is the point at issue. In the thought experimen...

Realism is a philosophical presupposition. Within that, the terms "intrinsic realism" and "participatory realism" have been proposed (see Table 1 in I...

I don't know what his motives are beyond thinking that the Everett interpretation is correct. In the above paper, Deutsch described a method for exper...

I would. For Wigner, the photon is separable from the superposed lab. From page 3 of Brukner's paper (where the above photon is system M): Interesting...

Wigner and his friend don't become entangled because the friend is sending exactly the same piece of information to Wigner from both branches, i.e., t...

I'm not sure whether we're referring to the same experiment. I'm thinking of David Deutsch’s version of the Wigner’s friend experiment which Caslav Br...