Did you see my reply here? Link. — fdrake
I remember a physics prof in university spending maybe 15 minutes scolding me when I said something like "the uncertainty principle says we can't know...", they responded "The uncertainty principle has nothing to do with how much we know about particles, it's not about our knowledge of the particles, it's about the particles" - not that exactly since it was a lot of years ago now, but that was definitely the gist. They were pretty mad at the suggestion it was epistemic, and their research was quantum theory, so I trust 'em. — fdrake
Edit: I have another story like that which is pretty funny. We had an analysis lecturer that was extremely eccentric, and one of the masters theses they were willing to supervise was on space filling curves. They handily included a "picture of a space filling curve in a subset of the plane", which was just a completely black square. I asked another prof if the eccentric prof actually wrote out code to draw the space filling curve, since it was the kind of thing he'd do if he could. The other prof got pretty angry and said "Computers can't do that, it's noncomputable, the construction relies upon the axiom of choice!". — fdrake
That's very ad hoc. It's much simpler to avoid the special pleading and just go with idealism. — RogueAI
I agree with you that consciousness isn't computable. That would be another case of special pleading: series XY...Z of switching actions/q-bit whatevers produces a conscious experience but series AB...C doesn't? That makes no sense. What's so special about XY...Z? Why should the order in which switches are pulled have anything to do with consciousness? — RogueAI
What sorts of intuitions do you have about cases like these? If the idea of teletransportation makes you uncomfortable, why is that? Is a fear of dying justified here? — Tarrasque
I can concede that "2+2" and "4" are equal but not the same. — jgill
↪jgill
How can they represent the same Platonic ideal when "+" represents an ideal in itself, which is part of "2+2", but not part of "4"? — Metaphysician Undercover
Simulation theory runs into the same problems materialism does wrt consciousness: how does opening and closing switches (or q-bits) in some special order produce conscious experience? — RogueAI
It isn't an epistemological limit. — fdrake
This is exactly my point, such axioms are based in ontological principles, they are not "pure mathematics. You can insist that there is no ontology to them all that you want, refusing to consider the evidence, in denial, that's a matter of your own free choice. — Metaphysician Undercover
Actually I demonstrated your faulty interpretation of the premise of extensionality. That two symbols refer to something of "equal" value is not sufficient for the conclusion that they refer to "the same" thing. Being the same implies being equal, but being equal does not imply being the same. You commit a fallacy of conversion. — Metaphysician Undercover
You are the one in denial, insisting that mathematical axioms are exempt from judgements of true and false, being "pure mathematics", and absolutely abstract, refusing to accept the truth in this matter. — Metaphysician Undercover
There's no mismatch in my discourse, you simply refuse to try and understand what I'm saying. — Metaphysician Undercover
I believe that two plus two equals four. I do not believe that "two plus two" and "four" refer to the same thing. — Metaphysician Undercover
Since you think that they refer to the same thing, you and I give "2+2=4" different meaning. We simply interpret this phrase differently. — Metaphysician Undercover
It is an ontological difference. So I reject some conclusions of mathematical formalism as unsound, based in unsound premises. — Metaphysician Undercover
This does not exclude me from taking a look at some of these unsound conclusions. Comparing unsound conclusions with what is really the case helps in the effort to produce better premises. — Metaphysician Undercover
The premises, axioms, theories, are metaphysical claims. whether you recognize this or not. I know we disagree on this, and you think that such premises might be based in something called "pure mathematics". but I explained to you in the other thread why this is an unsound principle itself. There is no such thing as "pure mathematics" in an absolute sense. Mathematics is ultimately guided by utility, and even those who might seem to be engaged in pure math are doing what they are doing (choosing whichever problems they choose to be working on instead of working on other problems) for a reason, so utility cannot be removed from mathematics. — Metaphysician Undercover
Do you recognize that scientists, in their scientific endeavours, regularly employ metaphysical principles? — Metaphysician Undercover
In saying that "2+2" and "4" refer to the very same thing, you make a metaphysical (ontological) claim. — Metaphysician Undercover
Lol, true. It actually says in the first paragraph of the Stanford article "It is this unique amalgam of both old and new concepts of the physical world that may account for the current revival of scholarly interest in Descartes’ physics." — Gregory
Sean Carroll explicitly says this. He says the world is a brute fact of quantum fluctuation, using Russell's old phrase btw — Gregory
Physicists seem to be on a roll these days. Unfortunately, I’m not talking about a string of new discoveries about the fundamental nature of reality, but of a panoply of speculative notions ranging from the plausible but empirically untestable (and therefore non-scientific), such as Sean Carroll’s marketing of the many-worlds interpretation of quantum mechanics, to sheer nonsense on stilts, like the idea that is the subject of this essay.
Thought that was interesting in the context of our conversation.
https://medium.com/science-and-philosophy/the-universe-simulates-itself-into-existence-and-other-nonsense-from-modern-physics-32e958b690b
It’s interesting that we want to understand. Why aren’t we content with the experience? Why believe dreams refer to something? I’m not saying it’s pointless, but why do we believe there’s something there? — Brett
I know it leads into a hall of mirrors. But what else would you expect?
Some thoughts on knowledge/reality/the unknown. — Brett
No way! I just tagged you because you were "openminded and pluralistic about math" in the past with me — Gregory
I only read it in the Stanford Encyclopedia of Philosophy on Descartes Physics. It said people are having renewed interest in it. I watched a video once that showed how his definitions of forces and reactions couldn't work on a billiard table. The guy said he had another video on Descartes "flawed" optics, but I couldn't find it and even the first video isn't around anymore. Sad — Gregory
thank you for that link. actually I've just been reading about the Copenhagen interpretation on Wikipedia, and it seems that if I know where the waiter is I can't tip him anyway! — Kaarlo Tuomi
↪fishfry
A caterpillar has a metaphysics.
— fishfry
What do you mean? — Brett
So is this just psychology? — Brett
You clearly do not understand, if you think that I accept the Fourier transform. I accept it as an example of an unresolved problem. — Metaphysician Undercover
And when that unresolved problem is united with the bad metaphysics of special relativity, the result is the uncertainty principle of quantum mechanics. — Metaphysician Undercover
Relativist seemed to be arguing that a metaphysician is better trained to do metaphysics than a physicist, yet there is some metaphysics, such as the metaphysics of time, which a physicist is better trained to do. — Metaphysician Undercover
However, the uncertainty principle is clear evidence that physicists should leave the metaphysics of time in the hands of metaphysicians. — Metaphysician Undercover
Thanks for offering your take on this. I think this is exactly where the unresolved problem lies. It appears like the size of a chosen base unit might be completely arbitrarily decided upon. — Metaphysician Undercover
Yet the possible divisions are not arbitrary because divisibility is dependent on the size of the proposed base unit. Take 440 HZ as the baseline, for example. From this baseline, one octave (as a unit) upward brings us to 880HZ, and one octave downward brings us to 220HZ. So the higher octave consists of 440 HZ, and has different divisibility properties from the lower octave which consists of 220 HZ. This results in a complexity of problems in music. — Metaphysician Undercover
Well I had a thread a few days ago that got closed because I claimed math maps out the impossible and that the opposite flip side is true of every mathematical statement. — Gregory
So perhaps the negative numbers are positive and vice versa, e.g. I was trying to start a conversation but people got upset. I don't deny math's usefulness and it's beauty, but math might not be the last statement about math itself. — Gregory
Well I tagged you because other people weren't responding to posts I was making here. — Gregory
I started out ny explaining what I meant about the math thing so you don't think I'm a nut. — Gregory
The OP here, however, was talking about Aquinas, who said that the world was contingent and needed a necessary God. Physicist are now saying nothingness was before the big bang, making the world contingent without the need for "the necessary". — Gregory
Sean Carroll explicitly says this. He says the world is a brute fact of quantum fluctuation, using Russell's old phrase btw — Gregory
I think any mechanical theory can be resurrected in the search for a "theory of everything". I said quantum physics is answer to Descartes, but perhaps Descartes is the answer to QM. Newton replaced Cartesianism with a lot of forces. God was the ultimate one that Descartes had wanted one force to control everything and thought God could be found only in the mind. Perhaps that "one force" is pure leverage, as he thought. It's a thought that needs to be worked out for sure, but the Stanford Encyclopedia says there is growing interest into Cartesian physics again — Gregory
Probably. There are studies that literally argue our brains control time. There are lots of Youtube videos that run with this and say we are in almost complete control of our "free lunch", given us by the universe. There might be some truth in these videos that the universe gives itself to us freely. And then there are Napoleon Hill types (the forerunner of The Secret), that say our thoughts are in complete control of everything. These ideas may have a kernel of truth still — Gregory
Well I think my point was that objects are finite on one side, but flip the coin and it's infinite was well. — Gregory
There no end to the descent into an object. Imagine taking a spaceship (one that forever shrinks) into a banana. Only infinity is in there. This seems to be a contradiction of logic. I have had enough trouble trying to explain the problem to people, let alone getting a satisfactory explanation. Think about it: objects are finite and infinite in the same respect — Gregory
Thanks for your response man — Gregory
But I was talking about computers brought up by accident, combinations of atoms, not by intelligence. — Eugen
Assuming is not a good thing. — Athena
How about our trouble with Iran begins during the Eisenhower administration because he used the CIA to create a rebellion in Iran that took out the democratically elected leader and put in his place a tyrant because the US wanted to be sure it had control of Iran and not the USSR. — Athena
That was a disaster as we brought in our troops making matters worse until the Iranians rebelled again and threw us out. I would be glad to go on about the wrongs done by our military-industrial complex, and how screwed the taxpayer is and how completely powerless we are if that is what people want to discuss. But that conversation would only be pathetic venting and do absolutely nothing to make things better. I am so angry about the perversion of our democracy and the place to make a difference is education. — Athena
Had we been paying the real price of oil from the 1950's until fracking, our gasoline would have cost at least as much as the Brits were paying for gasoline and many of us could not have afforded it because the real cost of oil is the military expense of controlling it and that went sky high during the Reagan administration when we took control of the Persian Gulf and granted arms to people like Sadam. — Athena
Bin Laden did not attack the people of the US. He attacked the military-industrial complex and we should have thanked him and taken advantage of this moment to take power away from the military-industrial complex — Athena
but really is that our biggist problem compared to global warming and doing to our water supply what we have done to our oil supply, and ----- — Athena
Does anyone remember when we thought our constitution prevented the federal government from controlling public education? — Athena
How about remembering when the government could not track us through education, banking, and medical care and now our cell phones? — Athena
What do you think of having to have a government-approved ID to ride public transportation? — Athena
And that wall we are building with taxpayer money walls us in and well as walling others out. — Athena
No more fleeing to Canada to avoid the draft p/quote]
I was in that demographic at the time and seriously considered that option.
— Athena
and the No Child Left Behind bill mandates schools to give military recruiters students names and addresses. — Athena
Bring it on, dump your anger here, — Athena
then maybe people will start taking discussion of education seriously. — Athena
This is supposed to be a philosophy forum and this thread is about the military-industrial complex and culture change. I didn't think this forum got political. — Athena
We were known around the world as a nation that stood against war. — Athena
Iran loved us because we helped them get rid of British control. Making America great again did not mean a military power controlled by neocons and paid for by taxpayers. — Athena
And our education was based on the Enlightenment, — Athena
not technology for military and industrial purpose which I have said is education for slaves and is destroying our democracy. — Athena
The only way to encounter the unknowable is to quieten the mind, to not ask the question. I can only see two ways of doing this: action, which shuts down the cognitive mind, or sleeping, when the mind ceases to think and what we get instead are dreams, almost an unconscious language, which of course we don’t understand. — Brett
Heisenberg's uncertainty principle is in any event an epistemological and NOT an ontological fact. It's a limitation on what we can know (with our current theories) and says nothing about what truly is.
— fishfry
That view assumes counterfactual definiteness; the belief that the possibility of stopping a moving arrow to construct a definite position implies that the moving arrow must have a real and precise but unknown position when it isn't stopped or it's position otherwise measured. — sime
Yet this unquestioned assumption of counterfactual definiteness is the reason why Zeno's paradox appears paradoxical. To my understanding, Zeno's arguments are perfectly sound, which means that i have no choice but to reject counterfactual definiteness in order to resolve the paradox, and is the reason why i believe that Zeno ought to have stumbled across the underlying logic of Heisenberg's principle (when it is interpreted ontologically). — sime
Of course, the rejection of counterfactual definiteness is only one means of making sense of quantum entanglement and which is also the view of the Copenhagen interpretation, which means that Heisenberg uncertainty is interpreted as ontological ambiguity/incompatibility, rather than as epistemic uncertainty. — sime
I had this in a signals processing/wavelets class a while back. There's a standard proof here.
The Fourier transform of the momentum operator applied to a wavefunction is the position operator applied to that wavefunction. There's a theorem in signal processing called the Gabor limit that applies to dispersions (variance) of signals; the product of the dispersion of a signal in its time domain representation and the dispersion of a signal in its frequency domain representation is at least (1/4pi)^2. Math doesn't care that time is time and frequency is frequency, it might as well be position and momentum. The Gabor limit applied to (position operator applied to wavefunction) turns into the Heisenberg uncertainty principle for position + momentum of wavefunctions. — fdrake
It's illustrated in the link you provided, if you Fourier transform a Gaussian with variance xx, you get a Gaussian with variance 1/x1/x; the product of the two variances is strictly positive. If you scale the original distribution by k, the Fourier transformed distribution will be contracted by 1/k. Contractions in transform space are dilations in original space. When dilations in time result in contractions in frequency, it isn't so surprising that the product of "overall scale"/(variance) of time and frequency has a constant associated with it. — fdrake
It isn't an epistemological limit. — fdrake
In statistical modelling, there's a distinction between epistemic and aleatoric randomness. Epistemic randomness is like measurement error, aleatoric randomness is like perturbing a process by white noise. One property of epistemic randomness is that it must be arbitrarily reducible by sampling. Sample as much as you like, the uncertainty of that product is not going to go below the Gabor limit. That makes it aleatoric; IE, this uncertainty is a feature of signals that constrains possible measurements of them, rather than a feature of measurements of signals. There is no "sufficient knowledge" that could remove it (given that the principle is correct as a model). — fdrake
But if objects are trans-finitely infinite, how can they remain finite as well — Gregory
When I say for example that 1+1=4, I mean it esoterically. When Hawking says time acts as a fifth direction of space, he is talking as a scientist. He says nothing was before this curve in spacetime, meaning I think that the free lunch is contingent. Quantum uncertainty may be the root of physics, the answer to Descartes's vortex of the universe. Any talk of the "necessary" is sitar music thinking, and if our brains control time we have access to the heart of contingency — Gregory
if this were true, then there would also be an infinite number of galaxies made of nothing but pineapples and bananas. — Kaarlo Tuomi
Do you have a source for this? I'd love to see the connection. — fdrake
But he also says this (NYT): ''half-baked philosophy has sometimes gotten in the way of doing science." — jgill
By this I guess you’re suggesting that the mind is the source, or core, of what we are. But that doesn’t do it for me because the mind is still an idea. You equate “self” and “mind” in your quote by Descartes. Are they both the same thing? — Brett
I agree that this is hard to take. You could just as easily substitute God in there. — Brett
My problem is that science is an idea, a fiction, of the mind. So many ideas coalesce that add up to science. Therefore it cannot be subject to science. — Brett
Yes, so there cannot be an “I”, true? — Brett
There is another angle which is that our behaviour is determined by hormones, genes and synapsis, rather than free will. — Brett
So there is no “I” except the one created, the fictional “I”. — Brett
Out of idle curiosity, what exactly is your objection to quantum physics?
— fishfry
If you're interested, just go back and read the posts I made in this thread. They aren't large, and there isn't a lot.
— Metaphysician Undercover
Fishfry - don't waste your time. — Relativist
Are you familiar with the frequency-time uncertainty exposed by the Fourier transform? Once you familiarized yourself with this uncertainty principle, you'll see that what it says exactly is that time cannot be measured precisely. — Metaphysician Undercover
Conventional epistemology makes a distinction between propositional/knowing-that knowledge and various other forms, such as knowledge-how, (e.g. knowing how to ride a bicycle, which you don't learn from a book), and knowing a person or a place by acquaintance. For a while, the leading response to Jackson was the ability hypothesis, which claims that, on her release, Mary gained, not propositional knowledge, but certain abilities, such as how to recognize, recall and compare colors. These are generally considered to be examples of knowing-how, not knowing-that/propositional knowledge. These days, the favorite form of reply seems to be "old knowledge in a new guise": when Mary sees colors, she does not gain any new knowledge, but sees her existing knowledge of physics in a new way. To me, this seems both implausible and unnecessary, an attempt to explain away something that already has a straightforward explanation, so I am disinclined to describe it further. — A Raybould
I don't deny quantum uncertainty. I just explained how it is the product of bad metaphysics. — Metaphysician Undercover
In fact it’s like there’s nothing there in the human mind at all. The idea, the fiction, is not the mind it’s a creation of the mind. So even the mind is a creation of the mind, another fiction. — Brett
Democracy is no more or less an idea, or fiction, than the idea of God and heaven. — Brett
is the ruling elite interested in destroying
the US? — Number2018
Your understanding is that all was initiated be Dems — Number2018
Right now, if Dems
win the elections, will they try to stop the trend? — Number2018
The problems around the world are challenging and I am not sure what part in them the US should play? But we can know this is not the first time a democracy became a defender of the world. — Athena
he knowledge of physics that Mary has learned from her studies is entirely propositional (i.e. expressed in textbooks or lectures as a series of sentences that are distilled into propositions), while knowing "what it is like" is not propositional — A Raybould
Our present situation is ultimately different from China’s state of affairs in 1966 — Number2018
So I am trying a new approach, the following comes out of Chris Hedges's book Empire of Illusion. — Athena
Actually, galaxies are made up of lots of dust...some of which turns into stars which then turn back into dust. And planets and such also. — Frank Apisa
Jackson's use of the word "knew" needs to be clarified. When Jackson claims Mary "knew everything physical about the color red" he refers to everything except the direct experience of redness and that implies Jackson is of the view that physicalism entails that knowing what brain-state corresponds to actually seeing red should evoke the brain-state of actually seeing red but that's an odd and false claim to make because the brain-state of knowing what brain-state corresponds to actually seeing red and the brain-state of actually seeing red are themselves two different brain-states and being different they can't have the same effect. To clarify further, suppose x is the brain-state of seeing the color red and y the brain-state of knowing x. Clearly x and y are different but, most importantly, both are can be brain-states i.e. Mary's room argument fails to achieve its intended objective of refuting physicalism. — TheMadFool
