• Sweeping Generalizations
    If you have been bitten by a dog on your only encounter with a dog, then of course you are wise to treat all dog encounters with caution in the future. The fallacy in your reasoning is to suppose that your response to a single encounter can have any connection whatever with inductive reasoning.
  • Something's Wrong!
    "If all the numbers in your calculations are such that they cancel out and leave you with a nice whole number answer, you're (almost) guaranteed to have solved the problem correctly."

    I would be curious to know what argument from mathematical philosophy supports this assertion? I can see a sense in which one could argue that set theory revolves around "nice whole numbers", but I am not sure how one might apply it to quantum mechanics or relativity theory.
  • Wisdom- understood.
    I think this is a very wise analysis.
  • Additional Axiom of Arithmetic
    What are the 6th and 7th Dedekind/Peano axioms?
  • Wittgenstein and Turing
    "grok" is a philosophical term I haven't come across before...
  • Reflection schema
    Assuming this is a current post...

    Please try to explain your thesis in natural-language terms, in the way that Bertrand Russell did in his Introduction to Mathematical Philosophy, for example. There are many competent mathematical philosophers reading the forum who aren't necessarily proficient in a system of logical symbolism.
  • Reflection schema
    I do not have the expertise to address your post, Newberry, but you will find that, like me, there is nobody reading this forum who is actually competent in mathematical philosophy.
  • Xinxue
    Philosophically we have much to learn from the bamboo. The bamboo bends before the breeze, but survives the typhoon.
  • How is truth possible?
    Why do you say it's obvious? I suppose "I think, therefore something exists", could be considered as self-evident. But that isn't what you mean, because you speak of OBJECTIVE truth (ie something which would continue to be true, even if I personally didn't exist.)

    "Reality must have non-caused events" - if you sincerely believe this, any textbook of introductory theology will satisfy your needs. If you are commited to the pursuit of truth, however uncomfortable the consequences, enrol in a philosophy 100 course.
  • Mathematical Logic and Properties of Objects
    You need to express more clearly which "properties" you are referring to, I think. The simple arithmetical operator <> already expressess a non-equivalence of the property of numerability. On the other hand, if we wish to distinguish the property of "oddness", <> will not distinguish between 3 and 5.
  • Is this a valid argument?
    I'm sorry, jancanc, but I am not sure what question you are asking here? Everything in your post is correct, I think. What exactly are you asking?
  • The Decline of Intelligence in Modern Humans
    "Studies suggest that we are gradually becoming less intelligent."

    I think the average philosophy forum thread would certainly support the contention. Not this thread, especially, but certainly the average.
  • Is anything ruled out?
    How about an elephant hanging over a cliff with its tail tied to a daisy?

    How about the question: does God love a thing because it is good, or is it good because God loves it? Presumably one can be ruled out - but which?
  • What is possible will eventually occur in the multiverse
    I think this thread may be re-inventing a 140-year-old wheel; if you google "the eternal recurrence", or "Henri Poincare", you should find some informative links.
  • Euclids Elements
    (and unfortunately, few mathematicians are really familiar with any of them). — alan1000


    "Is this opinion or fact? Please state your references if the latter. "

    My apologies! I was too facetious.
  • What happened to Type Theory?
    Thanks for your help! My reading so far has been fairly haphazard. This should allow me to put some system into it.
  • What happened to Type Theory?
    I'd appreciate it, I'd like to read up more on this topic area.
  • What happened to Type Theory?
    Thanks for your detailed and considerate reply, TonesInDeepFreeze. I need some time to digest it, as I'm a newcomer to this area of philosophy!
  • What should be the primary purpose of a government?
    Marigold23, your question is expressed in such general terms that it is impossible to answer in less than 5000 words. The answer depends upon the nature and circumstances of your hypothetical state.

    What is the average standard of education? Population density? Natural resources? How big an area does it cover? Does it exist in a 'cockpit' area, like Belgium or Palestine? What are its relations with its neighbours? What are its previous traditions of government? Are there internal ethnic tensions?
  • What happened to Type Theory?
    Is there a way to resolve Russell's Paradox without resort to Type Theory? Can it be resolved by argument from the axioms of set theory?
  • Geography of Philosophy
    I think you should just go with the flow for the next year or two at least, Daniel. Let's face it, your intellectual life is currently a dog's vomit and your philosophical consciousness is a toilet. One thing that even the cat at home knows is that you won't find any magic answers in Athens or anywhere else, because enlightenment comes from within, if indeed it ever comes.
  • What is Love?
    Other than the subjective experience of feeling powerfully attracted to some object or person, can you suggest any additional properties of 'love'?

    Human 'love' can be rationalised in terms of the need to perpetuate the species; this explains why most humans fall out of love once they pass reproducing age (or even earlier).
  • At what quantity does water become a fluid?
    "One molecule of H2O is not water."

    I'm sorry, but you are wrong, H2O is precisely the definition of water. A single molecule of water can, in fact, achieve the states of molecular excitation which typically result in freezing, crystallisation, or boiling.

    If only one molecule of water is present, then obviously crystallisation can't take place. But that doesn't stop it from being a molecule of water. If it isn't water, what else is it?
  • Are some circular arguments reasonable? and is this an example of one?
    This has nothing to do with circular arguments in the traditional sense. What you are asserting here is 'Sartrean' consciousness - the [self]-awareness of consciousness - as opposed to the simple, reactive consciousness of, eg, Behavioural Psychology,
  • Euclids Elements
    Euclid's Elements epitomise an enormously important insight of Greek philosophy: firstly, you must agree on the definitions of the key terms you are going to discuss, otherwise, your discussion will just go around in circles. Secondly, you must agree on the logical principles which bind those definitions together [the axioms], otherwise, again, your discussion will go around in circles.

    Once you have agreed the definitions of the key terms, and the logical rules by which they can be manipulated, you can go on to elaborate theorems (ie knowledge).

    This is true for ALL branches of science and mathematics, and just as much today as it was two and a half millennia ago.

    With regard to mathematics, there are three axiom sets you need to be familiar with (and unfortunately, few mathematicians are really familiar with any of them).

    1. The Peano/Dedekind axioms of arithmetic.

    2. The axioms of mathematical logic.

    3. The axioms of set theory.

    By the way, Euclid's Elements orginally included no diagrams. Its arguments were entirely based on logic.
  • What if currency was contingent on care?
    Hi Lif3r,

    I think your post is perceptive and thought-provoking, but why on earth do you think blockchain is the answer? There is nothing LESS transparent and accountable. The two most common criticisms levelled against BitCoin, for example, are that it is a playground for wealthy speculators and god's gift to the criminal community.
  • A Definition of Love
    Not really sure.

    Love is the irrational faith that selflessness properly produces selfishness, and that reciprocally, selflessness properly produces selfishness. Love is simply faith in this reciprocity. Self-love is selflessness out of this faith, while love of others is also selflessness out of this faith.

    Unless of course one is motivated entirely from selfishness.
  • p
    "there a moral obligation to contribute to organizations working to alleviate poverty until doing so involves sacrificing something of comparable moral significance."

    Owain, this is essentially the Principle of Utility; the greatest happiness of the greatest number. Faced with a moral choice, you have to decide: what should I do, to guarantee the best possible outcome for the greatest number of people? Which outcome is the least of all evils?

    Unfortunately, this principle cannot give you concrete answers to the specific moral difficulties which arise in your life, because only you can evaluate the outcomes of your actions. Don't waste your time phoning a talkback line; only YOU can evaluate the options.

    There was a guy from Nazareth, a homeless Palestinian fundamentalist, who preached "Do as you would be done by". If you follow this guy and his teaching to its logical conclusion, you must treat familes from the other end of the planet the same way you would treat your own.
  • "Bowling Green. Sewing Machine."
    With regard to this question, if you run a search on the noted works of "Gongniu Fenbian", I think you will find some interesting results.
  • Short thought on Truth
    Nagel, the general drift of your question is clear, but you cover a thousand kilometres of philosophy in every paragraph. I seriously recommend you undertake a formal college course in basic philosophy, or read through a few "Introduction to Philsophy" textbooks, to clarify your thoughts on the problems which interest you.
  • Nature of time.
    Interesting point, with many ramifications. I need some time to think it through.
  • The Limitations of Logic
    Please summarise your argument in a couple of hundred words (or less). If possible.
  • Nature of time.
    First things first.

    "If everything in the universe stopped moving in an absolute sense..."

    Point: "Since motion in the universe can only be defined in relation to arbitrary reference points, per Relativity Theory, it is not possible to stop moving in an 'absolute' sense".

    Counter-point: "But if every reference point appeared to be motionless in relation to every other reference point, that would effectively be cessation of motion in an 'absolute' sense."

    Point: "Not necessarily. Every reference point could be apparently motionless in relation to every other, but the universe as a whole might be rotating. Alternatively, the apparent motionlessness might be only a special case of relative motion, just as the number 0 is a special case of 'number', in that it has no positive or negative value."

    Counterpoint: "But how would we know that the universe is rotating? After all, the universe is by definition 'everything'. By what reference point could it possibly be rotating?"

    Point: "Our definition of 'universe' is itself framed within the limitations of our own understanding. The fact is, we simply have no firm conception whether there might be anything 'outside' of the known universe, in either space or time. The question whether it might be rotating in respect of some unknown (and perhaps, to us, inconceivable) reference point therefore remains open."

    Counterpoint: "And as to the apparent absolute motionlessness being merely a special case of 'motion', how could we possibly establish that?"

    Point: "We can't. But as a matter of scientific logic, in the absence of any internal logical contradiction, the hypothesis cannot be excluded."

    Counterpoint: "So the question whether everything in the universe could stop moving in an absolute sense is unanswerable?"

    Point: "I'm afraid so."
  • Recommendations of logic text books
    Bertrand Russell, An Introduction To Mathematical Philosophy.

    The definitive introduction to Peano arithmetic and set theory. In this book you will find (for example) proof that an infinity may be less than some natural number.
  • Those Who Claim Morals Only Come from God are Against Seclularism
    Mr Phil, my remarks were meant to be an endorsement of comments made by DingoJones.
  • Those Who Claim Morals Only Come from God are Against Seclularism
    Ram, has it occurred to you that your opinions are leftist?
  • The story of creation, but in a clear and realistic view
    All I know about the universe that I live in is that the sun is shining today. Everything I think I know beyond that is guesswork. That was Richard Feynman's view and I agree with him!
  • Why do some Christians compare the fear of death with a desire to live forever?
    Hi Maureen,

    From your messages so far, I presume you don't believe in life after death? Don't good people expect to live forever after they die?
  • Maimonides and The essence of God.
    There are actually some interesting points raised here. Can God have accidental properties? Well, clearly, God COULD have created Eve first, rather than Adam, which would be an accidental event (in the philosophical sense of the term "accidental").

    Presumably it is an essential attribute of God that She or He is, at least, a more powerful being than any existent being. Otherwise there is no point in "worshipping" him or her.
  • Defining Life
    Perhaps what your own post makes clear is that the definition of "life" is arbitrary. Is "life" defined in terms of reaction to the environment? I don't think so, because molecules which are destroyed by disinfectant are responding to their environment. Is life defined by the ability to react in some adaptive way? Possibly, but you need to develop the point.