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Thread: Philosophy of Science and Skepticism

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    Default Philosophy of Science and Skepticism

    Scientific Realism makes three kinds of claims:
    1. Metaphysical - There is an external world that is mind-independent.
    2. Semantic – ex. “Should scientific claims be construed literally?”
    3. Epistemological – Scientific theories are approximately true
    “The positive argument for scientific realism is that it is the only philosophy that doesn’t make the success of science a miracle” – Hillary Putnam

    The No-Miracles Argument
    P1. Science is extremely successful
    P2. Scientific realism provides a better explanation for the success of science than any rival theory.
    C. We should believe the philosophy of science that best explains the facts about science
    Scientific realism simply applies to science as a whole the same methods that scientists themselves use. An inference the best explanation, which is often used in science itself. Scientific realism says mature scientific theories are approximately true. What does it mean to say that a theory is true?

    Problems for scientific realism

    Problem 1. Even if realism best explains success, it may not explain other facts, such as theory change.
    Is realism the best explanation for the success of science? And if it is the best explanation, is that a good reason?

    Problem 2. The use of Inference to the best explanation assumes realism, so an argument in favor of realism simply begs the question.
    If the anti-realist is right, IBE cannot be assumed to lead to true explanations. If the anti-realist is right, IBE merely leads to acceptable explanations. But the No-Miracles Argument uses IBE to infer the truth of theories. Such theories are merely empirically adequate. If what a theory says about the observable parts of the world is true, then that theory is empirically adequate.

    Response: The No-Miracles Argument does not rest on the assumption that the best explanation is the true one, but that it only rests on the assumption that we should accept the best explanation. It’s just that accepting the best explanation entails truth in this case.
    The realist claims the best explanation of the success of science is that mature scientific theories are approximately true. We don’t need to say this explanation is true, but that we should accept this explanation as true (believe it), merely accepting the explanation itself entails realism.
    “It is true that our best scientific theories are approximately true” – Circular Argumentation.
    “We should accept that our best scientific theories are approximately true” - Not Circular.

    Anti-realists deny that IBE leads to the true explanation. They merely hold that it leads to acceptable explanations, that are empirically adequate, in comporting with observable phenomena. Anti-realists, like constructive empiricists, hold that there is no need to postulate truth, and that anti-realist views are just as empirically adequate as the realist views.

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    edited out
    Last edited by Petros Agapetos; 11-29-2016 at 05:03 AM.

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    Default Skepticism in Modern Western Philosophy

    In western philosophy, skepticism is, broadly speaking, the attitude of systematically doubting knowledge claims. However, skepticism actually encompasses a range of views and philosophies. Skeptics have challenged the adequacy or reliability of many speculative claims, such as the existence of God, by asking what principles they are based upon or what they actually establish. They have questioned whether some such claims really are, as alleged, indubitable or necessarily true, and they have challenged the purported rational grounds of accepted assumptions. In everyday life, practically everyone is skeptical about some knowledge claims; but philosophical skeptics have doubted the possibility of any knowledge beyond that of the contents of directly felt experience. The original Greek meaning of skeptikos was “an inquirer,” someone who was unsatisfied and still looking for truth.

    "[A skeptic is one] who doubts the validity of what claims to be knowledge in some particular department of inquiry; one who maintains a doubting attitude with reference to some particular question or statement.”

    "By exposing inadequate justifications for beliefs, the way is cleared for the seeker of truth to find adequate justifications."
    "Being a skeptic doesn’t mean you are doubtful of everything, forever. It means you don’t accept claims as true without good reason."

    In a way, epistemology is the counter-part and opposite to skepticism. From ancient times onward skeptics have developed arguments to undermine the contentions of dogmatic philosophers, scientists, and theologians. The skeptical arguments and their employment against various forms of dogmatism have played an important role in shaping both the problems and the solutions offered in the course of Western philosophy. As ancient philosophy and science developed, doubts arose about various basic, widely accepted beliefs about the world. In ancient times, skeptics challenged the claims of Plato and Aristotle and their followers, as well as those of the Stoics.

    The French philosopher and mathematician René Descartes suggested that our senses could be misled by an evil demon, which would throw all our knowledge into doubt.
    "[I] am finally compelled to admit that there is not one of my former beliefs about which a doubt may not properly be raised"
    — René Descartes

    In the 17th century, skeptics attacked Cartesianism (the system established by René Descartes) along with other theories that attempted to justify the scientific revolution initiated by Copernicus, Kepler, and Galileo.

    David Hume is an influential skeptic who questioned religious belief that was supported by evidence. Later, a skeptical offensive was leveled against the Enlightenment philosopher Immanuel Kant and then against the philosophical idealist Georg Wilhelm Friedrich Hegel and his followers.

    Skepticism, especially since the Enlightenment, has come to mean disbelief — primarily disbelief in religious or paranormal claims that lack proper justification.


    It is easy to be skeptical about unfamiliar claims but to be a skeptic, in the philosophical sense, would be to apply it universally to knowledge and even to one's own beliefs.
    "The most ardent skeptics enjoy their skepticism as long as it does not encroach upon their own cherished beliefs. [...] It is easy, even fun to challenge others’ beliefs, when we are smug in the certainty of our own. But when ours are challenged, it takes great patience and ego strength to listen with an unjaundiced ear."
    Belief is unconscious, disbelief is conscious.

    Some studies suggest that belief is an unconscious processes, in contrast to disbelief which requires concious consideration which can override the unconscious believing processes. Based on this, skepticism more cognitively taxing than unquestioning belief.
    "The data suggest that readers must expend strategic effort to reject the information they acquire from literary narratives."
    — Richard Gerrig

    "Analytic processing inhibits these intuitions, which in turn discourages religious belief"
    — Ara Norenzayan

    Even if disbelief requires concious consideration, it does not necessarily make it a choice. Our conscious thinking is guided by criteria that are selected unconsciously.
    Nietzsche also observed that suspension of judgement is difficult and people jump to conclusions. He pointed out this may confer a survival advantage.

    "Whoever, for example, could not discern the "like" often enough with regard to food, and with regard to animals dangerous to him, whoever, therefore, deduced too slowly, or was too circumspect in his deductions, had smaller probability of survival than he who in all similar cases immediately divined the equality. [...] In itself every high degree of circumspection in conclusions, every sceptical inclination, is a great danger to life. No living being might have been preserved unless the contrary inclination — to affirm rather than suspend judgment, to mistake and fabricate rather than wait, to assent rather than deny, to decide rather than be in the right — had been cultivated with extraordinary assiduity. — The course of logical thought and reasoning in our modern brain corresponds to a process and struggle of impulses, which singly and in themselves are all very illogical and unjust; we experience usually only the result of the struggle, so rapidly and secretly does this primitive mechanism now operate in us."
    — Friedrich Nietzsche

    One example in which this effect may be observed is the tendency of people to imagining phenomena are caused by intelligent agents.

    Uncertainty is uncomfortable
    Uncertainty, which is a possible outcome of skepticism, can be an uncomfortable experience. People are included to avoid this by choosing to believe a comfortable fiction.

    "The state of uncertainty is psychologically uncomfortable for humans and motives individuals to engage in actions and behaviors to reduce uncertainty, thus gaining predictability."
    "Uncertainty is an uncomfortable position. But certainty is an absurd one."
    — Voltaire

    "First principle: any explanation is better than none. Because it is fundamentally just our desire to be rid of an unpleasant uncertainty, we are not very particular about how we get rid of it: the first interpretation that explains the unknown in familiar terms feels so good that one "accepts it as true.""
    — Friedrich Nietzsche

    Some have argued that people seek for uncertainty and it is not always a negative experience.

    Extreme Skepticism

    Extreme skepticism is a niche philosophical position of adopting extreme doubt of all knowledge. Proponents fundamentally doubt the reliability of their senses, memory and cognition, which in turn implies the impossibility of belief in anything. This view tends towards perpetual indecision. Arguments for this view are the possibility of Descartes's evil genius or being a brain in a vat. Since it is impossible to maintain behaviour that is consistent with the view for very long, it is generally not considered a credible philosophical position and is rejected by most philosophers. Mainstream skeptics are willing to provisionally accept good evidence (Evidentialism) and, unlike extreme skeptics, do not insist on perfect evidence.

    "Whether your scepticism be as absolute and sincere as you pretend, we shall learn by and by, when the company breaks up: we shall then see, whether you go out at the door or the window; and whether you really doubt if your body has gravity, or can be injured by its fall; according to popular opinion, derived from our fallacious senses, and more fallacious experience."

    The view can be traced back to the Greek school of Pyrrhonism. Extreme skepticism is similar to solipsism. Arguably, skeptical extremism is self-refuting or at least self-undermining since it claims that knowledge is impossible. Some apologists make general statements that all skeptics are share this extreme view but this is usually a strawman argument.

    Self-refuting?
    "A standard ploy, dating back to antiquity, is to argue that skepticism can be shown to be self-refuting by turning skeptical arguments back upon themselves (peritrope). How, it is ask, can rational arguments be used to undercut rationality itself without thereby undercutting themselves?"

    "Skepticism is itself a positive assertion about knowledge, and thus turned on itself cannot be held. If you are skeptical about everything, you would have to be skeptical of your own skepticism."

    This objection applies to extreme skepticism but not to skepticism in general. Skepticism raises doubts over the possibility of absolute certainty but it does not usually go as far as denying all rationality. Many skeptics allow that provisional knowledge is possible for "evident propositions" i.e. things that are readily observable. For this reason, the argument against skepticism is a straw man. David Hume argued that having a high degree of confidence in rationality makes skeptical arguments appear stronger, while having a lower confidence in rationality makes the arguments appear weaker. For this reason, skepticism provides a useful counterbalance against over-confidence in rationality.

    "The sceptical and dogmatic reasons are of the same kind, though contrary in their operation and tendency; so that where the latter is strong, it has an enemy of equal force in the former to encounter; and as their forces were at first equal, they still continue so, as long as either of them subsists; nor does one of them lose any force in the contest, without taking as much from its antagonist."

    As long as one is not a pure skeptic, it is quite possible to be skeptical about skepticism by doubting it and questioning it, but not necessarily rejecting it.
    Academic skepticism, which says "nothing can be known except this statement", sidesteps being self-refuting by special pleading.

    Skepticism is not a productive policy when used by itself. To produce new knowledge, it requires additional philosophical tools such as empiricism and evidentialism.
    "You can get into a habit of thought in which you enjoy making fun of all those other people who don’t see things as clearly as you do. We have to guard carefully against it."
    — Carl Sagan

    Skeptical doubt is not the same as uninformed doubt

    Frank Turek asked his religion professor if God existed. The professor responded "I don't know". Frank responded:

    "I simply walked out, frustrated with the entire semester. I could have respected a qualified "yes" or "no" with some reasons given, but not "I don't know"-I could get that from an uninformed man on the street. I expected a lot more from a university religion professor."

    This falsely equates considering the evidence and concluding "I don't know", with not looking at the evidence and saying "I don't know". Skeptical doubt on an issue is not the same being uninformed.

    Even the Bible recognizes the need for skepticism:
    "The simple believe anything, but the prudent give thought to their steps."
    — Proverbs 14:15

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    Do you find this material easy to grasp?
    Do you find it interesting? or would you like more commentary?

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    Then let this be a sort of encyclopedia just for our forum on important terms often discussed in philosophy. I hope you will read it if I can make the subject more interesting to you.
    Last edited by Petros Agapetos; 11-29-2016 at 07:02 AM.

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    Do you support skepticism as a value? It is one of the scientific values.

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    Quote Originally Posted by Petros Agapetos View Post
    Do you support skepticism as a value? It is one of the scientific values.
    It worked for Descartes. Cogito ergo sum!

    Btw who is your favorite philosopher, other than yourself of course?

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    Quote Originally Posted by Shazouzu View Post
    It worked for Descartes. Cogito ergo sum!

    Btw who is your favorite philosopher, other than yourself of course?
    I am not a philosopher; I'm in Engineering. I do philosophy for my own entertainment and learning. I love Immanuel Kant and Rene Descartes, as well as Bertrand Russell.
    Last edited by Petros Agapetos; 11-29-2016 at 11:04 PM.

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