• A fun puzzle for the forums: The probability of God
    Let us think of slices of time as "states".Philosophim

    You would have to assume an absolute time for that, that is, something like a Newtonian universe. In a relativistic universe there is no fact of the matter about how the space-time is to be sliced along the time dimension (the technical term for this is foliation). Now, we don't have to commit ourselves to any particular physical framework, but in view of Relativity, neither can we take for granted the existence of an objective foliation.

    Let us think of slices of time as "states". At its most simple, we would have a snapshot. But we could also have states that are seconds, hours, days, years, etc. We determine the scale. Within a state, we analyze the existence that has occurred. Causality is the actual prior state, not potential prior state, that existed which actually lead to the current state we are evaluating.Philosophim

    This won't do as a definition of causality. Rather, you could restate this to say that given a causal model, it is the case that every state is causally related to an earlier state, if there is an earlier state (but see my note above).

    If there is no prior state, then there is no reason for the first state that is, to have existed. For the reason of a current state, is explained by the actual prior state. All we can say as to why a first state existed, is that it did.Philosophim

    You are conflating reasons with causes (you do that in the OP as well). They are not synonymous.

    The only thing I can logically conclude from the above premises, is that there is no cause for the existence of any potential universe. Whatever universe exists, exists without prior explanation.

    Lets examine this thought process before I move on. Does this clarify my position?
    Philosophim

    To the extent that this makes any sense, this was a very convoluted path to an uncontroversial conclusion: in a causal model with an initial state, the initial state is the cause of all subsequent states, and there is no cause for the initial state.
  • A fun puzzle for the forums: The probability of God
    Do you understand that by "necessity", I mean actual, and not potential state?Philosophim

    I don't understand why you use modal language if you don't mean it. And if you eschew modality, then what is left of your definition? If we plug 'actual' in place of 'necessary,' we get something like this:

    Causality - an actual prior state in time before the current state in time.

    ???

    Before you had a counterfactual definition of causality, which has its problems (one of which I pointed out), but I think that in this basic form it captures a lot of the common-sense, "ordinary language" meaning of causality. With some work it can perhaps be made into something more robust.

    But now I just don't have any idea of what you are trying to get at.
  • A fun puzzle for the forums: The probability of God
    Let me clarify for you, as I worried people will interpret it that way. I did not mean to imply potential prior states by "necessary". I mean actual prior states. Sure, A could be caused by B or C potentially. But in this case, A is caused by B. Therefore B is necessarily the prior cause of the A. Perhaps a better set of terms would be B is the actual cause of the actual A?

    Thus for a first cause, there is no actual prior causality involved for its actual existence. Does this make sense?
    Philosophim

    No, I am afraid you've lost the thread. Remember, you were trying to define causality:

    Causality - a necessary prior state in time for the existence of the current state in time.Philosophim
  • Imaging a world without time.
    Now fiction aside, can we imagine a place without time? Would any events occur? Can memories form? Or do all possible events occur simultaneously? What is the lay of the land?TiredThinker

    I don't see any conceptual problems with a timeless world. We routinely construct such worlds in our minds. One of the subfields of mechanics is actually called Statics, and there are plenty of other theories and models in which time does not figure. Frankly, I am surprised that anyone with any exposure to science and abstract thought in general would have a difficulty with this concept.
  • A fun puzzle for the forums: The probability of God
    Causality - a necessary prior state in time for the existence of the current state in time. If there is no necessary prior state that entails the current state, then the current state is a "first cause" without any prior causality. Does that make sense?Philosophim

    No, this won't work. Suppose A was caused by B, but it could alternatively have been caused by C. Neither B nor C are necessary for A to occur.

    This is a well-known objection, by the way. I don't know why, but philosophers of the previous century loved thought experiments involving murder. So a counterexample might have run like this: Black arranged to kill Smith by dropping a chandelier on him. Instead, it so happened that the chandelier dropped and killed Smith on its own. So Smith was killed by a chandelier, but neither an accident nor a murder were individually necessary for this to occur.

    I started reading your "puzzle," but like @Antony Nickles I immediately got bogged down in questions and objections and didn't even get to the "fun" part. I frankly find topics like causality to be more fun puzzles.
  • Modern Philosophy
    Well, this place may be slightly more expert than the general population, on average, but only slightly. There are hardly any professionals here, a few well-read dilettantes, but most aren't very knowledgeable.
  • Coronavirus
    Effectiveness is established in the labs in thousands of test tubes by mass laboratory techniques. Before they ever take a vaccine outside the lab effectiveness is already solidly established.
    Biological testing with live animals and humans is different. This is where side effects, persistence, and other unknowns are expected to show up before a vaccine goes for approval.
    magritte

    This sounds like science fiction. Where are you getting your info? Since when is the effectiveness of anything is "solidly established" in vitro?

    When the Russians claimed that they had won the vaccine race after supposedly observing an immune response in a small human trial, everyone thought they were nuts. But not even they were crazy enough to stake their claim before running a trial.
  • Modern Philosophy
    Curious, why would you want to solicit opinions from a few random people on the Internet? If you want to know who the best known or most influential modern philosophers are, you will do much better with Google.
  • What are you listening to right now?
    A bona fide philosophical piece: Steve Reich gives an appropriately minimalistic treatment to a quote from Wittgenstein: "How small a thought it takes to fill a whole life!"



    Somewhat less typical in style, but one of his most beautiful pieces IMO.
  • Practical value of Truth with a capital T
    Having read through the discussion, I still don't really know what you are getting at with all these Capital T's and Absolutes and so forth. Some examples that you gave (1=2, etc.) have to do with so-called analytic statements. On whether those can be doubted see e.g. Quine's Two Dogmas and the ensuing debate. More generally, the meaning and function of truth is a long-standing question in philosophy, one of the less tractable ones, but I am not sure whether your query has anything to do with that.

    Perhaps instead of making vague, sweeping statements, considering some specific question would help.
  • Do I have to trust past experience because past experience tells me that?
    I trust experience because it tells me that it should be trustedznajd

    The reason you trust past experiences is that you believe that the future will be very much like the past. If tomorrow things start falling up instead of falling down, then all your experiences of things falling down will be of no use to you. It is because you believe that things will continue falling down that past experiences can be useful in making predictions and decisions.
  • If Philosophers shouldn't talk about the big stuff in the world, who should?
    Now, why should not the people best suited to THINK make significant contributions to that? And who is more suited to think, than philosophers?Ansiktsburk

    Everyone thinks, and people of intellectual professions - such as engineers and managers - can think their way through certain kinds of problems better than most. Philosophers are specialists too. They are better than most at solving certain kinds of intellectual problems (most of which are, like chess, games of their own invention). They are not all head and shoulders above everyone else in any intellectual task that you throw at them. I wouldn't trust a random Plato scholar with making decisions about lockdown, I would want people with relevant skills and experience.
  • My Moral Label?
    For me that depends on an odd sort of private language (maybe not 'private', but oddly technical). To claim that one's process is addressing 'moral' decision-making, one must already know what type of decision-making is 'moral' as opposed to any other sort. And to know if one's process works, one must know what a 'good' decision should be, which again one would learn from experience.

    So in order to understand the meaning of 'morality' and 'morally right' one must have learnt it by example from other people, and the evidence we have of the process other people are using is varied in the manner I described. Thus one is inevitably talking about the decision-making we actually do.
    Isaac

    We learn how to use moral language from other people, but we don't necessarily learn how to be moral in the same way (although there is an overlap between these two learning processes). We acquire a common language, but we don't generally acquire a common morality with all language users - which, of course, is what makes moral disagreement possible.

    One could, I suppose, having learnt how to use the terms say "scrap all that and decide thus", but what would make anyone do so aside from their moral desires, the satisfaction of which has just been described.

    It would seem like setting out an algorithm which we've no intention of following to solve a problem we already have the answer to.
    Isaac

    The problem that you are pointing at is that of persuasion. How persuasion happens is not simple and straightforward, but we know that it does happen.
  • empirical or phenomenological account of compassion/altruism?
    However, strictly speaking, it can't be both an empirical and phenomenological account?jancanc

    Can you elaborate on the contrast that you are drawing between an empirical and a phenomenological account? (I am not even going to ask about "metaphysical," because that is such a mushy category.)
  • My Moral Label?
    Any moral 'system' which tries to claim moral decisions are based on a single metric is just pointless armchair speculation without any reference to the real world in which this simply doesn't happen.Isaac

    Whether this is a relevant objection depends on what one is trying to achieve. If your goal is to describe how moral reasoning functions in general, then of course you want to be "as close to scientifically accurate as you can get." But moral philosophy is primarily concerned with normative questions. Objecting to Peter Singer's utilitarianism, for example, on the grounds that it doesn't fit the moral profile of the general population would be missing the point.
  • The most important and challenging medieval Philosophers?
    The SEP article on Medieval Philosophy gives a short overview. I would start here. If you like podcasts, History of Philosophy Without Any Gaps has a section on medieval philosophy, with an intro episode.
  • Information, Life, Math and Strong Emergentism
    Sounds pretty reductionist.Marchesk

    Yeah, OK, that does sound reductionist. But I must confess that there is a lot of muddle and controversy in this bundle of concepts: reductionism, emergence, supervenience, downward causation, autonomy, etc. Better philosophers than Sean Carroll have been trying to make sense of this mess and still there isn't anything like a settled opinion, not even on on their meaning.
  • Information, Life, Math and Strong Emergentism
    I think when he agreed with Tegmark on our universe being mathematical, he meant it could be fully described by math without leaving anything out. Which means it can be simulated in principle by a full understanding of the microphysics.Marchesk

    That's not the same thing. This would be reductionism, which is a much stronger position than just holding that the universe can be described with mathematics. Proponents of strong emergence, downward causation, autonomy of sciences also believe that the universe is "mathematical" - they just think that the mathematical description cannot be built from the bottom up.
  • Information, Life, Math and Strong Emergentism
    In Sara's podcast, Carol mentioned Bedau's paper on emergence, where weark emergence is anything that could in principle be simulated before it emerges. A mathematical universe would be computable, so that would make any phenomena weakly emergent. Sara says she doesn't think life can be simulated.Marchesk

    For there to be any kind of emergence, the universe must be "mathematical" in the weaker sense of having an all-pervading structure. The varieties of emergence are different takes on that structure. It would be safe to say that up to this point Carroll is on board with Tegmark (who does take a stronger position), but so is practically everyone involved in this conversation.
  • Information, Life, Math and Strong Emergentism
    Sean thinks the universe is mathematical (from the Tegmark podcast), so naturally he thinks emergentism is weak, since all macro properties could in principle be computed in advance, given everything is math in his and Tegmark’s view.Marchesk

    Tegmark was on Carroll's podcast, but I don't think Carroll has endorsed his idea. Carroll is a good interviewer, in that he is receptive to all ideas and tries to get his interviewees to make their strongest case. But that doesn't mean that he agrees with everything they say.

    Anyway, I don't see much of a connection between mathematical universe and weak emergence.

    Sara’s views are a bit more complicated. It helps to take into account her views on information and life’s emergence earlier in the podcast.Marchesk

    I didn't find that it helped, to be honest. But I've looked at her publications; she has a number of papers on top-down causation in biology, some with Paul Davies, who has also been interested in this topic. That would probably speak to "strong emergence."

    Emergence is a tricky topic, as evidenced even by the number of articles with titles like "Emergence," "What is Emergence?," "Making Sense of Emergence," etc. that have come out over the decades.

    Sara then mentions math and the question of why it's so useful in physics.Marchesk

    She explored this theme here: The Descent of Math.
  • Is Consciousness an Illusion?
    It’s about the logical contradictions of materialism. Logic is important for some.Olivier5

    Ah, how wonderful it is to be a self-assured fool. Everything is crystal-clear, and no question requires more than two seconds of contemplation.
  • Information, Life, Math and Strong Emergentism
    I listened to that podcast, and I found that part of the talk obscure (and my impression was that so did Sean).
  • Is Consciousness an Illusion?
    Do we have to have the same damn discussion year round in five different threads? "What does it mean? How can consciousness be an illusion? What is it an illusion of?" I mean, how hard is it to read anything by Dennett, Frankish, Graziano, Pereboom? Or a frigging Wiki article? The main idea is not difficult to understand, whether or not you agree with it.
  • Towards a Scientific Definition of an "Action"
    I should note that of course there are other senses of "action," and one can also come up with their own definition for some purpose. I only insisted on this particular definition from physics because that was the context set by the OP (although he then wanders from it a bit).
  • Towards a Scientific Definition of an "Action"
    Clearly, there are no holonomic constraint equations possible for particles under "intelligent control"Sir Philo Sophia

    Seems obvious to meSir Philo Sophia

    I am curious, is this your personal theory about animate matter, or did you read it somewhere?
  • Towards a Scientific Definition of an "Action"
    Amen, and a small point. Anything can be defined by anyone anyway they choose to define it - whether any good a different topic. Insofar as the definition is a text intended to convey a definite meaning, wrt to that text the language matters, is in fact the first and arguably only thing that matters.

    In literature is the concern for le mot juste, the right word. I imagine in the sciences as well, perhaps as the correct word. And do the sciences have their own phrase for that?
    tim wood

    My point wasn't that you can define action however you want. It was rather the opposite: action has an established definition in Lagrangian dynamics. But Lagrangian dynamics is just a mathematical framework that is applied differently in different contexts. Once you define your Lagrangian (a mathematical object), then the definition of action follows straightforwardly from that. But how the Lagrangian is cached out in physical terms is going to vary from one theory to another. It is one thing in non-relativistic classical mechanics, another - in relativistic classical mechanics, yet another in quantum mechanics, etc.

    Here is a random example from the literature:

    This paper proposes a theory for understanding perceptual learning processes within the general framework of laws of nature. Neural networks are regarded as systems whose connections are Lagrangian variables, namely functions depending on time. They are used to minimize the cognitive action, an appropriate functional index that measures the agent interactions with the environment. The cognitive action contains a potential and a kinetic term that nicely resemble the classic formulation of regularization in machine learning. A special choice of the functional index, which leads to forth-order differential equations---Cognitive Action Laws (CAL)---exhibits a structure that mirrors classic formulation of machine learning. In particular, unlike the action of mechanics, the stationarity condition corresponds with the global minimum. Moreover, it is proven that typical asymptotic learning conditions on the weights can coexist with the initialization provided that the system dynamics is driven under a policy referred to as information overloading control. Finally, the theory is experimented for the problem of feature extraction in computer vision.Cognitive Action Laws: The Case of Visual Features

    Here the Lagrangian formulation is given to a mathematical model of a perceptual learning process. The action here doesn't even have the units of energy x time, as it usually does in physics. But given the context of the model, it is unambiguously defined.

    I am not going to comment on the OP "theory" with regard to animate vs. inanimate matter, which he somehow wants to cram into the definition of action. I was just giving some context on how action is actually defined in mainstream science for those who may have chanced on this thread.
  • A true solution to Russell's paradox
    @fishfry already addressed a number of your misconceptions. You ignored his patient explanations and are now repeating the same mistakes here. And while you quoted my post, you did not address its content and instead repeated the same nonsensical arguments that you made earlier. I don't see a point in continuing this conversation.
  • A true solution to Russell's paradox
    Standard set theory includes an axiom that basically says that given a set, any collection of its elements is also a set. Since sets that are not members of themselves are included in the set of all sets, then a collection of all such sets must form a set. But we know from Russell's paradox that such a collection cannot form a set on pain of contradiction.
  • Towards a Scientific Definition of an "Action"
    I am not going to comment on the "definition," but for those who are actually interested in science, action can be defined in any theory that admits a Lagrangian formulation. Lagrangian dynamics applies to a very important class of theories in physics and other sciences. Invariances of the action integral under continuous transformation were the subject of the famous theorems of Emmy Noether, who related them to symmetries and conservation principles, such as conservation of energy.

    Because Lagrangian dynamics is a general mathematical model that is applicable in multiple contexts, action cannot be given a single physical definition that will cover all applications. This is a feature, not a bug. A general definition could be something like "the integral with respect to time, along a possible history or trajectory in configuration space of the system, of a quantity with the dimension of energy" (Butterfield).

    A classic introduction to the concept in physics is Feynman's lecture on the principle of least action.
  • Dark Matter, Unexplained
    Care to explain in what sense it's 'opposite'?Wayfarer

    The article tells how much we actually do know about "dark matter." What we don't know may well turn out to be something pretty boring, like a WIMP. Or it could turn out to be something more exotic (which would be that much more exciting, as far as physicists are concerned). Or it could remain forever out of reach of our instruments and our models. But none of this implies or suggests that something "non-physical" is going on (whatever that means).

    Well you can define physical things so as to include it. That's usually how physicalism continues. At first "physical things" were rocks and such, then they became the less intuitive waves, then the non-inuitive "Probability functions" and now "physical things" pass through each other apparently.

    I never got the split between physicalism and idealism for this reason, it seems physicalists are playing dirty by changing what counts as "physical" every few decades, leaving no room for something to be "non-physical". Eventually we're going to say that consciousness is a "Physical thing". But at that point the word "Physical" becomes meaningless and redundant, as it should, and so will "Idealism". We'll just have "thingism"
    khaled

    That's a problem if you define "physical" as what current physics posits - see Hempel's dilemma, etc. (SEP article on Physicalism goes into gory details if you are interested.) I personally don't see a satisfactory definition of "physicalism" in terms of an ontological commitment.
  • Dark Matter, Unexplained
    Nice article in Vox though, and the thrust of it is, if anything, the opposite of Wayfarer's perennial pitch.

    As a slightly nerdier companion piece I would recommend this podcast in which cosmologist Sean Carroll interviews astrophysicist Lina Necib on What and Where The Dark Matter Is.
  • Dark Matter, Unexplained
    Yet another iteration of "science doesn't know everything there is to know, therefore physicalism is false."

    Move along, folks, nothing to see here.
  • Towards a Scientific Definition of Living vs inanimate matter
    given that you are in such great command of current state-of-the-art scholarship on the subject, as you claim to be aware of, then why don't you reply with what you find to be the best scientific definition of what minimal properties constitutes living matter vs inanimate?

    If you cannot offer one, your own or what you believe in the most from literature, then I choose to ignore your rants about me not posting literatures best vs Webster's.
    Sir Philo Sophia

    You missed my point. This wasn't about showing how much more I know on the subject. Although I happened to know a little more than Webster's definition, the point was to show you that voluminous literature on the subject exists and is readily available, so you don't need to start from scratch. I even gave you some specific pointers. But that was because I mistakenly assumed that you may be interested in learning and discussing ideas.

    So, let's see if you can do better...Sir Philo Sophia

    Ah, no, thanks. You are not worth my time.
  • Towards a Scientific Definition of Living vs inanimate matter
    In other words, thanks for confirming that you do not have or know of a concise Scientific Definition of Living vs inanimate matter. So, maybe science has not clearly defined it?Sir Philo Sophia

    Do you really think that people who study life have never given any thought as to what life is? Never ventured a definition? Your OP cites one definition from a dictionary - was that the extent of your research? As a scholar, you owe it first of all to yourself, not to mention your readers, to do your due diligence, rather than demanding that others do your homework for you.

    A couple of simple Google Scholar searches would have given you plenty of literature on the topic, including specific proposals, reviews of past efforts, as well as general thoughts on why and how we should (or perhaps shouldn't) go about defining life - which is a question that, as a philosopher, you should probably ask yourself first.

    As one example, an entire issue of the Origins of Life and Evolution of Biospheres journal was devoted just to this question. Or if you like podcasts, I can recommend Sean Carroll's talk with astrobiologist Stuart Bartlett, where they touch on these issues and discuss Bartlett's own proposal. The paper is also available: Defining Lyfe in the Universe: From Three Privileged Functions to Four Pillars ("Lyfe" is not a typo :)).

    If you look at the literature, you will quickly notice a pattern: the scientists who are most interested in the definition of life are mostly astrobiologists like Barlett, and origin of life researchers - which makes sense, of course (this is to the point of why we might need a definition of life). From the origins of life perspective, you may find this recent review of particular interest: Origins of Life: A Problem for Physics (2017) by Sara Imari Walker (she was also a guest on Sean Carroll's podcast). Among its 190 references the review includes some of the names that @apokrisis has already recommended to you (but not all - which shows just how much scholarship there is on this topic).


    Now as to your own proposal, I find it very puzzling, because it is actually a hypothesis masquerading as a definition: a hypothesis that living organisms have a unique ability to transcend the principle of least action. The principle of least (or stationary) action is considered to be one of the, if not the most fundamental laws of nature:

    Among the more or less general laws which manifest the achievements of physical science in the course of recent centuries, the Principle of Least Action is probably the one, which, as regards form and content, may claim to come nearest to that final ideal goal of theoretical research. — Max Planck

    If you were to discover that anything in our universe was not subject to this principle, you would have overturned the last two and a half centuries of physics (and not just physics). The only explanation that I can see for your matter-of-fact attitude towards your "definition" is that you are harboring some severe misconceptions about PLA, as evidenced by comments such as this:

    The path of least action, As defined in physics, for any living system is simply to die.Sir Philo Sophia

    Far from dooming living systems, the PLA, alongside the 2nd law of thermodynamics may be key to understanding self-organization in our universe, of which living systems are, by some metrics, the most extreme example known to us. See for instance Chaisson, The cosmic environment for the growth of complexity (1998), Georgiev and Georgiev, The least action and the metric of an organized system (2002), Annila, The 2nd law of thermodynamics delineates dispersal of energy (2010), as well as Apo's recommendations.
  • Has science strayed too far into philosophy?
    Well, you seem not to hold philosophy in high regard compared to natural sciences.ssu

    I am not denigrating philosophy. But since we have this specialization and division of labor, philosophers should be using scientific results and ideas where it is appropriate - for example, when discussing the metaphysics of space and time (e.g. The Ontology of Spacetime ed. D. Dieks.)

    What I just oppose is the simple reductionism of the view that If physics at the nuclear level uses QM, the QM should be used as an overall philosophyssu

    Well, that is one view, but it is not the only view, and it is not just taken for granted because science.
  • Has science strayed too far into philosophy?
    Hence if you are making a philosophical argument, far better to base it on previous philosophical inquiry on the question at hand.ssu

    That's a terrible idea. I just can't think of a single advantage in rejecting the fruits of the most productive period in the history of scientific thought and empirical research in favor of recycling past ideas. Ideas, which themselves were, of course, to a great extent informed by observations and scientific ideas of their time and times past.

    I would ask why would it be so. Because philosophy has debated already for long the problems of physicalism and materialism. And the pseudo-scientific world view was about a "Clock-work universe" and then this changed to "Multiverse" with Butterfly-effects, it really isn't pure philosophy.ssu

    I say good riddance to "pure philosophy" (if there ever was such a thing, which of course there wasn't - see above). Of course, my idea of a scientifically literate philosopher is not one whose ideas about science come from popular media publications and, God help us, Butterfly Effect. Fortunately, in actuality there is no lack of philosophers who are better informed about their subject matter (see, for example, some names from the three generations of philosophers of physics in the paper that I linked above, which include actual physics PhDs).

    Yet Is philosophy just thinking about nature? Natural sciences answer more directly to what nature is, yet any question of "what should be" and you need philosophy.ssu

    No argument here - except, of course, where philosophers choose the naturalizing approach.
  • Has science strayed too far into philosophy?
    Philosophers can relate to science, but basing philosophy on science can be a tricky thing as our scientific understanding can change a lot.ssu

    Well, what would we base it on then? We obviously cannot assume that the current state of science is the last word and the whole truth about nature. But ignoring science would be an even bigger blunder. We just have to live with the fact that philosophy is no less contingent than science.

    People tend simply to think that physics, Quantum Mechanics, cosmology etc. are somehow close to the basic philosophical questions, hence we let physicists blabber about philosophical question, things that they actually have not studied or worked on.ssu

    There is a reason why so-called fundamental physics is often thought to have an intimate connection with basic metaphysical questions (cf. physicalism, metaphysical and ontological grounding...) For example, while it is not a given that the ontology of fundamental physics has some sort of metaphysical priority, it is a popular enough notion.

    But more to the point of your complaint, as I pointed out above, science cannot be too far removed from philosophical questions. When scientists attempt to make sense of nature and come up with theories about it, they are not doing anything different in principle than what philosophers do when they turn to the same subjects. It is only relatively recently that academic and technological specialization bracketed off certain methods of study and called them "science."

    Still, if we view science as a branch or outgrowth of philosophy, then professional scientists, as a rule, have a much more narrow specialization than professional philosophers. This is why we find that scientifically literate philosophers are usually in a superior position when they philosophize about nature outside of the narrow scientific context, while, as a rule, professional scientists appear to be dilettantes in these matters. But that is when science is in a quasi-stable state, when no major paradigmatic changes are under way and well-informed philosophers can stay up-to-date with the state of science. Conversely, when you look at the history of thought, most important new developments in the thinking about nature were driven by developments in science.
  • Bad arguments
    I'll start with a nominee:

    When someone lets you in on something, you're getting it as you are.
    You can therefore never understand them.
    jorndoe

    Heh, are you trying to repeat Stove's competition? (Stop me if I am spoiling it!)
  • Determinism, Reversibility, Decoherence and Transaction
    Well, I'm being careful to distinguish between transmission and emission. Emission can be described as the spread of a single electron wavefunction from the tip of the cathode. Transmission is emission + absorption. In standard QM, transmission has occurred when we detect an electron on the screen. Emission by itself cannot, as MU keeps saying, be observed directly and independently (well, it can, but not without destroying the interference pattern).

    So the electron wavefunction may well continue to evolve but simply not collapse. In TQM, the same holds: the retarded wavefunction can evolve indefinitely; it is only when the transaction with the advanced wave occurs that transmission occurs. As per the OP, the emission occurs precisely because the transmission occurs, i.e. it is simply one of the boundary conditions of a process that is agnostic about any arrow of time.
    Kenosha Kid

    As per Cramer (and his predecessors), there can be no emission without transmission in the absorber theory, whether classical or quantum. "Absorber theory, unlike conventional quantum mechanics, predicts that in a situation where there is a deficiency of future absorption in a particular spatial direction, there will be a corresponding decrease in emission in that direction." (I don't think you disagree, since that is also the premise of your hypothesis - just pointing this out, because what you wrote might suggest otherwise.)

    In Type II transactions there is still an "absorber" - well, let's call it a "partner emitter."

    I wonder though whether the absorber theory actually rules out, logically or empirically, uncollapsed/unabsorbed waves?

    True, hence my interest in Type II transactions, which, if they existed, should be empirically observable and presumably would differentiate TQM-like interpretations from others empirically.Kenosha Kid

    By the way, in the 1980 paper Cramer wrote: "Davies argues that the most general test of absorber theory would include the possibility of type II transactions." This refers to a 1975 paper by Paul Davies: On recent experiments to detect advanced radiation. Perhaps that would be a good place to start digging in that direction. (Google Scholar doesn't list Cramer's paper among the references.)
  • Has science strayed too far into philosophy?
    I'm not sold either! It's just something else to ponder. The challenge is how to keep up with revolutionary progress in the sciences with static models. How do we explain even simple demonstrations of magnetism?magritte

    One can't usefully make general statements about the state of philosophy, but it is not like the progress of science is universally ignored - certainly not by those who specialize in modern science, but more besides. Obviously, Darwinism and Einstein's relativity have had a pronounced effect on philosophy (for better or for worse).

    Speaking of QM, I recently came across this entertaining survey from F.A. Muller: The Influence of Quantum Physics on Philosophy. He concludes thus:

    Although quantum physics has influenced philosophy in the sense that it has grown a new flourishing and blossoming branch of the tree of philosophy, apart from some recent contact between philosophy of physics and metaphysics, quantum physics has had hardly any influence on philosophy at all, and at best some influence on metaphysics, mostly in recent times. With regard to prominent issues intensely thought about by philosophers, such as those on the Chalmers-Bourget list [referring to their 2014 survey "What do philosophers believe?" - SC], we dare conclude that it is difficult to see how quantum physics could bear on those issues. If it cannot, it ought not, for ought implies can. — F.A. Muller