Comments

  • What are you listening to right now?
    After watching Nuri Bilge Ceylan's Climates this melancholy little piece is stuck in my head!

  • How to live with hard determinism
    Having gone through a journey of discovery, I find I have firmly landed as a hard determinist. But I am having a heck of a time finding any writing that addressed how we should live our mental lives as a hard determinist. I have a lot of ideas on the topic but was hoping not to have to try to reinvent the wheel. My moderate search over the last few months has only turned up a few paragraphs that directly address this problem. I'm hoping to find a writing on how to view justice, personal motivation, and the like, for a hard determinist. Anybody know of such a how-to writing??Brook Norton

    Compatibilism and related approaches (e.g. some strains of libertarianism) deal with these questions as axiological issues that are largely decoupled from physics. I know that you said that you reject compatibilism, but that is owing to your peculiar definition of free will that reduces it to physics. We do not need to get sidetracked by terminological disputes. If you want answers to the questions that you ask in the OP, then don't change the subject - think about those questions. What do they have to do with physics? On the face of it - nothing. You jump from one to the other too hastily; I don't think you quite thought it through.
  • How to live with hard determinism
    If "free will" means you can weigh the pros and cons and then decide how to act, then I'm a compatibilist. But if "free will" means you could have done otherwise, then I'm a hard determinist. I think the later definition is the more meaningful as I believe it is what most people intuit when they speak casually of free will.Brook Norton

    It's not as simple as that. Experimental philosophers and social psychologists have done quite a bit of research over the last couple of decades to try to find out what it is that folk actually believe about free will. It's a mixed bag: neither consistently compatibilist, nor consistently incompatibilist, but some of both.
  • Sapir-Whorf Hypothesis
    The Sapir-Whorf hypothesis basically says that people will only call something as they know it to be called.Anthony Kennedy

    That's not Sapir-Whorf hypothesis, that's an obvious fact.

    Depending on where people come from, there are many practices that are practiced there, but not allowed elsewhere. But should they be? Say it were illegal in place A to eat a strawberry before they have done their chores. In place B, strawberries can be eaten at any time. Say that person B from place B visits place A and eats a strawberry. Should person B be held to the same law as person A even though they both have a different idea as what is right?Anthony Kennedy

    Your example is too ambiguous. You need to decide whether you want to talk about legal practice, or moral relativism, or multiculturalism - all different questions with different answers.
  • Surreal Numbers. Eh?
    Is Euclid's line the same thing as the set of real numbers? We take as an unspoken axiom that it is; but if we remember that this is just an assumption, we can resolve our confusion over where the extra points go.fishfry

    @aletheist will be along shortly, I am sure, invoking the ghost of Charles Sanders Peirce and insisting that Euclid's line is not a collection of points at all. He would have a point, at least to the extent that it isn't a given that a line is identical with a particular collection of points.
  • What are you listening to right now?
    This is really funny. I’m listening to the birds, the sounds of nature. Who does that?Becky

    There was a blackbird who used to sing right outside my window some time ago (I spotted him a few times). That was very cool. Birds are quieter now, but still present.

    Speaking of which, I've recently been listening to all things avian in Messiaen, who loved birds.

  • Surreal Numbers. Eh?
    Well, "the number line" in its usual sense is just a visual metaphor for the real numbers (it will do for the rationals as well, though see above about "holes"). So in that sense, no, the number line is not missing anything. You have to work harder to motivate things like infinitesimals and hyperreals. And then you have to work even harder just to reproduce all the things that we can already do with real numbers, like addition and multiplication.

    One way to make it kosher is to consider it a generalized function. I never worked with those either.

    https://en.wikipedia.org/wiki/Generalized_function
    jgill

    Sure, I shouldn't be surprised that these nasties have long since been tamed, just like infinitesimals and infinities were earlier.
  • Coronavirus
    The inept and corrupt populists do what they typically do in such situations: pander to their base.
  • Surreal Numbers. Eh?
    The Dirac Delta function (0 everywhere except at x=0, there infinite) can be thought of in terms of infinitesimalsjgill

    It's funny how ubiquitous the delta function still is in physical and engineering mathematics, and yet it is completely non-kosher from the point of view of standard analysis. It was so useful that it survived Weierstrass's reforms, which did away with non-rigorous infinitesimals of the early calculus.
  • Surreal Numbers. Eh?
    The situation with surreals vs. reals is a little different than that with reals vs. rationals. Though it may seem as if rationals completely fill their number line, being as you can fit arbitrarily many points between any two points (i.e. they are densely ordered), rationals are actually full of holes, in a sense. You can construct a sequence of rational numbers that definitely converges to... something. But that something is not a rational number. There are lots and lots of such holes between rationals - in a way, the rational number line almost entirely consists of holes. And that is where real numbers come into the picture: they fill those holes.

    With real numbers the situation is different: they are complete. Any converging sequence of real numbers most definitely converges to a real number. There are no holes to fill - at least not in that sense. You have to work a little harder to find what those smug bastards are lacking: you have to violate the Archimedean property.
  • If energy cannot be created or destroyed, doesn't the universe exist forever?
    At cosmological scales time translation symmetry breaks down and, as a consequence, so does energy conservation.InPitzotl

    It breaks down in the sense that in a dynamic, curved and possibly infinite spacetime there is no uniquely correct way of calculating and keeping track of the total energy. Physicists don't seem to be much bothered by that though, because energy is mostly useful as a budget in local transactions.

    True story. Back in the 60s - that's the 1960s, not the 1860s - I was an under-grad Physics major. Thermodynamics was not on the undergrad curriculum.EricH

    Wha...? What was on the curriculum?

    At the end, during the Q&A period I asked how it was that the universe had such a low entropy value. The professor's response??

    "When God created the universe he created the Second Law of Thermodynamics"
    EricH

    Well, that's a crap answer and not even a good joke. The past hypothesis, as the (supposedly) low initial entropy of the universe is known (after David Albert), is an interesting and contentious issue.
  • Contradictions in the universe.
    The double slit and various related experiments do come close to suggesting the universe likes paradox. But probably we just don't understand what's going on.Marchesk

    No, it doesn't, and yes, we do. This is a typical situation where informal or sloppy language can result in an apparent paradox. IOW is right.
  • Coronavirus
    Lancet just published a large observational study of chloroquine-based treatmenets of COVID patients. It found that all treatments that are widely used in hospitals increase the overall mortality. Moreover, it appears that the already known heart complications are not the whole story - the drugs may actually worsen COVID symptoms.

    In more cheerful news: a (non-peer-reviewed, preclinical) Canadian study shows potential for medical cannabis to treat COVID-19.
  • Coronavirus
    Why didn't influenza stick around? Did it kill too many people back in 1918/19?Marchesk

    The Spanish Flu most likely was never eradicated, in the sense of going completely extinct - more likely, it mutated into less dangerous forms and may still be circulating. Of course, Covid-19 is very different from a flu virus, so direct comparisons are not apt. Nevertheless, the possibility exists that over time it will similarly evolve into something less lethal, as pathogens in general tend to do.

    As mentioned earlier, this strategy was successful with the Ebola epidemic in 2014.Andrew M

    Ebola wasn't eradicated though, it is endemic and is certain to reemerge from time to time (in fact there were confirmed cases in April).
  • Russel's Paradox
    Those symbols are just Unicode characters that you can copy/paste from anywhere (e.g. the first Google hit for "set symbols"). But this site also supports Latex.
  • Signaling Virtue with a mask,
    It makes sense because most masks were not manufactured for the purpose of blocking viruses or very small droplets of virus-carrying moisture. They were designed to reduce inhalation of hazardous dusts and pollution (smoke, for instance).Bitter Crank

    Oh so that's what surgical masks are for? To make those notoriously smoke-filled, asbestos-lined hospitals more safe for medical personnel? Who would've thunk.

    There has been largely consistent randomized controlled trial (RCT) evidence in health care workers that wearing surgical masks and N95 respirators can reduce the risks of respiratory illnesses [including severe acute respiratory syndrome (SARS)] by 40–60%, after accounting for key confounders such as other protective equipment or hygiene measures.8,11 However, uncertainty remains as to whether surgical masks are inferior to N95 respirators in preventing infection. A recent meta-analysis shows that, compared with surgical mask use, use of N95 respirators is associated with a >50% reduced risk of overall clinical respiratory illness but has no apparent superiority in preventing viral infection,11 which is supported by a more recent large-scale RCT in an outpatient setting.8 Despite the potential superiority of N95 respirators over surgical masks, the evidence in health care workers defies a common claim that surgical masks are ineffective for prevention because some coronaviruses (e.g. SARS-CoV-2) may be airborne in specific scenarios (e.g. during aerosol generating procedures) and/or can infect people through the mucous membranes of the eyes.

    Trial evidence in the general population is, however, more limited, because it is practically challenging to carry out and there is high risk of non-compliance and cross-contamination.15–17 Nonetheless, several case-control studies conducted in the general population in Hong Kong and Beijing during the 2003 SARS-CoV-1 outbreak found that frequent use of facemasks (predominantly surgical masks in both studies) in public spaces was associated with a >60% lower odds of contracting SARS compared with infrequent use, after accounting for key confounders.18,19 Although the effectiveness could be overestimated in observational studies (as seen in studies among health care workers11) the lack of conclusive evidence does not substantiate claims that surgical masks are ineffective for the public, but calls for further research, particularly on the reason behind the failure of transferring the effectiveness observed in health care workers to the general population, and the strategies needed to boost the effectiveness.COVID-19 epidemic: disentangling the re-emerging controversy about medical facemasks from an epidemiological perspective (Int J Epidemiol. 2020)
  • Signaling Virtue with a mask,
    The great thing about 'virtue signaling' is that people identify the signaler as virtuous, without the signaler having to actually go to the considerable inconvenience of being virtuous.Bitter Crank

    On the flip side, "covidiot" shaming is also a thing now.
  • A dumb riddle with philosophical allusions
    I'll go with the quotational approach - that's the opposite of disquotational, as in the disquotational theory of truth.

    The answer to this question is "The answer to this question."
  • Signaling Virtue with a mask,
    The scientific consensus seems to be that unless one is wearing an N95 mask, and wearing it properly, one is probably not limiting the distribution of corona virus much.Bitter Crank

    There is no such scientific consensus. The evidence is mixed, but the consensus, if anything, is that masks are somewhat effective, some more than others. Don't fall victim to all-or-nothing thinking: even a 20% reduction of the probability of transmission is better than nothing.
  • Russel's Paradox
    Let 'All sets that do not contain themselves as members' be

    a = {x}
    b = {y}
    c = {z}
    d = ... and these sets go on for as long as is necessary, e, f, g, h,...
    EnPassant

    Why are they all singletons?
  • Russel's Paradox
    Yes, but X is a set of sets so X = {{a}, {b}, {c},...} but {a, b, c, ...} might be correct too as long as the logic of what I'm saying holds up.EnPassant

    I don't see what logic could imply that {{a}, {b}, {c},...} is the same as {a, b, c, ...}

    You keep making the same mistake over and over again:

    The paradox asks if {X} is a member of XEnPassant

    No!

    The paradox asks if X is a member of X.

    X ≠ {X}

    {X} is a set with one member: X

    Set X = {{x}, {y}, {z}}

    If X is included

    X = {{x}, {y}, {z}, {{x}, {y}, {z}}}
    EnPassant

    No, that's not how it works.

    X = {{x}, {y}, {z}}

    X' = {{x}, {y}, {z}, {{x}, {y}, {z}}}

    X ≠ X'

    X ∈ X'

    X' ∉ X'
  • What is certain in philosophy?
    How much of what has been written about philosophy is indubitable?A Seagull

    What would be the point of writing down what is indubitable, except as a jumping off point (like Descartes' cogito)?
  • Russel's Paradox
    No, I am saying there are infinite collections of things that are not a set.
    See this link https://math.stackexchange.com/questions/24507/why-did-mathematicians-take-russells-paradox-seriously
    EnPassant

    That's an interesting discussion there. Most of us here are non-mathematicians, and among mathematicians only a small fraction are working in or at least interested in foundations.

    The paradox asks the question "Is X a member of itself?"

    Let's say Set X = {{a}, {b}, {c},....}

    If {X} is a member of X then

    Set X = {{a}, {b}, {c},....{X}}
    EnPassant

    Your notation is confusing. If you want to say that a is a member of X (a ∈ X), you would write that as

    X = {a, ...}

    which is not the same as

    X = {{a}, ...}

    {a} is a singleton set with a as the sole member.
  • What are you listening to right now?
    Just discovered this early piece by György Ligeti, a beautiful cello sonata:



    Bartok's influence, of course, but also very Bach-inspired. Somehow reminds me of
    Ysaÿe violin sonatas.


  • Russel's Paradox
    Set A = {a, w}
    Set B = {a, x}
    Set C = {a, y}

    Set X = the set of sets that have {a} as an subset.

    Set X = {A, B, C,...}

    {a} is in X (because {a} is in A, B, C,...)

    therefore X contains X
    EnPassant

    You need to understand the difference between being a member of and being a subset of.

    Set X = {A, B, C} = { {a, w}, {a, x}, {a, y} }

    a is a member of A, B and C, but not a member of X. {a} is a subset of A, B and C, but not a subset of X.
  • Russel's Paradox
    I think Russel's Paradox is superficial and I never believed it "undermines mathematics" which strikes me as an unjustifiably dramatic statement.EnPassant

    Who ever said that Russel's Paradox "undermines mathematics"? It undermines what is now known as "naive set theory" (an early attempt at an axiomatic set theory).

    In fact it is a trick question because of the way it is stated: "The set of all sets that do not contain themselves as subsets." Why are they calling it a set?EnPassant

    Because of the axiom of unrestricted comprehension, which is what had to be ditched in the wake of Russel's paradox:

    There exists a set B whose members are precisely those objects that satisfy the predicate φ.
  • Donald Trump (All General Trump Conversations Here)


    At the White House, the press secretary, Kayleigh McEnany, told CBS News Trump was taking hydroxychloroquine.

    “I can absolutely confirm that,” she said.

    “The president said himself he’s taking it. That’s a given fact. He said it. The president should be taken at his word.”
    The Graundian

    That's a good one.
  • Donald Trump (All General Trump Conversations Here)
    It is odd. The normal Trump strategy would be to switch to some other miracle drug once discouraging evidence becomes undeniable. And then of course lie about ever being in favour of it in the first place.

    Though it cannot be discounted that Trump drank his own Kool-Aid and is actually personally convinced it's a miracle drug.
    Echarmion

    The normal Trump strategy is to double down on the bullshit when he is called out on it. And he is perfectly capable of believing his own bullshit after repeating it enough times. That some nasty people are telling him that he is wrong only serves to reassure him.
  • Deontology vs Consequentialism
    he idea of any act being inherently good or bad is unfounded in any context, even legal or religious. Ultimately everything is conequentialist as everything is good or bad because you are working for or against what someone or something commanded. Murder is not inherently bad, it is bad because it goes against the law, or against what god said or against what you yourself said.Duckweed Jones

    I am not sure why you think this fits into consequentialism. You don't offer much of an argument, but your last sentence hints at a traditional deontological duty theory, as it contains a paraphrase of the well-known categorization of ethical duties: duties to God, duties to oneself, and duties to others.
  • Submit an article for publication
    Can something similar not be done here ?Amity

    I think the inclusion of essays as an 'ideal introduction' for beginners would be welcome on TPF.Amity

    Why? If you like the 1000wordphilosophy project, why not just put a link in Resources section? What would be the point of attempting to reproduce the same thing here?

    Besides, I think you vastly overestimate our resources. 1000wordphilosophy apparently solicits their articles from professional philosophers. There are hardly any professionals participating on this forum.
  • What determines who I am?
    I don't see the asymmetry.bert1

    This banana is the only banana in the world that is this and not any other. What's so hard about this?

    Yes, I know that you want to work the self-selection of the first-person perspective into the problem, but the original "problem" as stated does not display this feature. Indeed, the OP rejects it at the outset.
  • What determines who I am?
    But unless the banana is conscious, there is no asymmetry (that is relevant to this issue anyway) between one banana and another, and this banana can happily be self-identical without raising any philosophical issues. If a banana is conscious however, then there is an asymmetry, and it would make sense for the banana to ask of itself, why am I this banana, and not my yellow friend over there.bert1

    The asymmetry arises as soon as the banana becomes this banana. Consciousness has nothing to do with it.
  • What determines who I am?
    This is not a trivial question, I am not asking why a banana is a banana.bizso09

    Rather, you are asking: why this banana is this banana. This means that this banana is somehow special, compared to the others, because it has the property of "this".
  • What are you listening to right now?
    This broke my heart... again...

  • Is the Identity of Indiscernibles flawed?
    Natural language draws no such distinction, AFAIK. So you're already inventing technical language precisely suited to denying the identity of indiscernibles.Snakes Alive

    I disagree, I think there is a difference in usage between "the same" and "alike." In any case, technical or not, this is more than a stripped-down language of basic logical systems.

    Sure, but you can just say 'call one A, the other B.' Problem solved.Snakes Alive

    Before you can call one A, the other B, you have to indicate which is A and which is B - otherwise A and B will be interchangeable and you are back where you started. So it's haecceity or bust, it seems.

    I want to home in on the problem here: if you have no way to refer to them separately, you can't even coherently frame the scenario. If you do, then you have a way to distinguish their properties. You cannot have it both ways, where you have the vocab to frame the scenario, but not to distinguish between the two.Snakes Alive

    I agree with the spirit of what you are saying, but I still maintain that individual properties are not always the way to go. They are very convenient, but only up to a point. When we start pushing against edge cases, we should be prepared to give them up. We don't always need to refer to individual parts by their properties in order to know that they are there - we can infer their existence from the system as a whole.

    You can describe the system as a whole so as to imply that there are two distinct objects in it. That should satisfy your reasonable demand that we should be account for what we know. But further steps, such as introducing pseudo-properties, are superfluous.
  • Is the Identity of Indiscernibles flawed?
    If this is what property is taken to mean, that they are intrinsic to objects and don't require external context, then I would do away with the notion of properties entirely. This is where my structuralist perspective comes in, because I don't believe objects have intrinsic qualities, rather that they are defined by their places in some structure, where the structure is just the composite of relations between things. However, property could still reasonably be defined of a thing as any relationship it has derived from the structure. This is why PII seems so important to me: if it were the case that two things related to everything else in exactly the same way, and those things were not actually the same thing, it would just shatter my worldview.QuixoticAgnostic

    Then you are in trouble, because in a symmetric structure, such as the one with the two spheres, you still can't individuate an isolated part, even using relational properties, because symmetrical parts will have identical relational properties. But I don't think this undermines the structuralist view. The structuralist view is holistic, and when describing the structure of the system as a whole you don't run into any such difficulties. That's because you are not obligated to produce an exhaustive specification of an isolated part of the system; you always have the entire system as a background, so there is no danger of collapsing distinct objects into one, simply because you can't individuate them separately from the rest of the system. There is a difference between a structure with two spheres and a structure with one - so what does it matter that you cannot identify one of these spheres by its properties?

    Traditional ontological ideas come under even more pressure in modern physics, where the notion of a bounded material object does not sit well with such "things" as fields. And event if we grudgingly grant objecthood to subatomic particles, we then have to deal with bosons (integer-spin particles, such as photons) that can share all of their properties, including their position. So that while we may know that there is more than one particle, it is not possible, even in principle, and even with the loosest definition of a property, to individuate any of these particles. All we can say is that there are n particles in the system sharing the same state (and even that n may not be precisely known, being subject to Heisenberg uncertainty).
  • Is the Identity of Indiscernibles flawed?
    I actually don't think this is right. You can't block haecceity in natural language, either, which is why you need to come up with an artificial language that blocks it.

    In English, for example, you'd have to say: "suppose there are two distinct spheres, but they're the same in every way."
    Snakes Alive

    You might instead want to say "they are alike in every way," making it clear that you mean "internal", or "qualitative" properties.

    The response is: what do you mean? You just said they're distinct. Surely the one is not the other, then – but I've just predicated, in the natural language, a property of one that the other doesn't have, viz. the property of being the one as opposed to the other.Snakes Alive

    Ah, but unless you point at one or the other sphere as you say "one" and "the other," this will not get you out of the bind. Because without ostention, the sentence "the property of being the one as opposed to the other" is equally applicable to both spheres; the "property" therefore is exactly the same. It's frustrating, but there you are. If you are forbidden to point, you may find that you lack the words to distinguish between the two spheres in the absence of some additional structure in the world, such as an asymmetrically positioned observer. But this only says something about the limitations of expression.
  • Is the Identity of Indiscernibles flawed?
    Did you mean numerically identical? Because if they're already numerically distinct, it wouldn't matter if you predicated another distinction. Although, if you did mean identical, I don't think it would still make sense because if we take PII to be true, it would be impossible for two things to be numerically identical in the first place, so we couldn't predicate anything to make a distinction.QuixoticAgnostic

    No, I meant numerically distinct, as in the example of two spheres. If you are allowed to predicate anything by way of specifying a property, up to and including haecceity, then you will find a way to distinguish two apparently distinct objects, no matter how qualitatively alike they are.

    My point is similar to that of @Snakes Alive, except that he too readily trivializes the discussion by reinterpreting it in the formal logic context. Informal language is richer than simple logics in that you can block moves like counting haecceity as a property, without violating any rules. But then again, even if you find yourself in a situation in which, playing by the rules of the game, you cannot express something with words that is otherwise apparent, all that this signifies is that the game has its limitations.

    If there is a wider lesson here, it is that the traditional discourse of properties with its atomistic character, in which objects subsist without any external context, is inadequate.