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The Logic of Scientific Discovery (Routledge Classics) 2nd Edition
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Described by the philosopher A.J. Ayer as a work of 'great originality and power', this book revolutionized contemporary thinking on science and knowledge. Ideas such as the now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists, as well as post-war philosophy. This astonishing work ranks alongside The Open Society and Its Enemies as one of Popper's most enduring books and contains insights and arguments that demand to be read to this day.
- ISBN-109780415278447
- ISBN-13978-0415278447
- Edition2nd
- PublisherRoutledge
- Publication dateFebruary 21, 2002
- LanguageEnglish
- Dimensions5.08 x 1.23 x 7.8 inches
- Print length544 pages
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`One of the most important documents of the twentieth century.' - Sir Peter Medawar, New Scientist
`One cannot help feeling that, if it had been translated as soon as it had been originally published, philosophy in this country might have been saved some detours. Professor Popper's thesis has that quality of greatness that, once seen, it appears simple and almost obvious' - Times Literary Supplement
'One of the most important documents of the twentieth century.' – Peter Medawar, New Scientist
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- ASIN : 0415278449
- Publisher : Routledge; 2nd edition (February 21, 2002)
- Language : English
- Paperback : 544 pages
- ISBN-10 : 9780415278447
- ISBN-13 : 978-0415278447
- Item Weight : 1.28 pounds
- Dimensions : 5.08 x 1.23 x 7.8 inches
- Best Sellers Rank: #117,031 in Books (See Top 100 in Books)
- #67 in Philosophy of Logic & Language
- #145 in Food Science (Books)
- #334 in History & Philosophy of Science (Books)
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First, Popper is often seen as advocating a skeptical way of life--the principle of falsification is made to mean that one should always try to falsify one's one own theories and worldview. There may be some support for this philosophy in the Open Society but not in the Logic of Scientific Discovery. Here, Popper is explicit that he is not proffering a philosophy of life but a methodology for science.
Another related misconception is that Popper does not contend that his logic is the way science has historically progressed. The Logic of Scientific Discovery is explicit that it is normative. It argues not how science has progressed but how it should progress. The fact that Popper was so personally authoritarian that the line among his students was that his other major work should have been called "The Open Society by One of Its Enemies" seems eerily consistent with a philosophy professor dictating to scientists how they should conduct their work.
And here is where I find the work someone dated. Popper argues against the inductivism epitomized by John Maynard Keynes but seems oblivious to the work of statisticians like Ronald Fisher. Fisher, with his method of randomized experimentation was able to show the validity of inductive causal inferences. In the 1970s statisticians like Rubin extended these inductive arguments to observational studies. Meta-analyses using Bayesian inference have also shown then value of induction. Obviously, Popper cannot be held responsible for not recognizing the Rubin causal model. His inattention to Fisher, however, is troubling since he was a contemporary.
Most social science continues to progress within the Fisher/Neyman framework along with Bayesian advances. To be honest, Popper's work in this domain can seem as passé as the inductivism of Keynes.
That the Logic is a work of genius is indubitable. I would argue, however, that falsification is not the one valid method for science. A fortiori it is not a philosophy of life all human beings must follow.
Because deduction yields sure knowledge if it is based on sure knowledge and induction always produces only hypothetical knowledge, as Bertrand Russell clearly stated, Popper begins by trying to show that the use of deduction instead of induction can provide a solid logical basis for science. He talks about replacing "inductivism" by "deductivism." In reality, he explains the use of deduction in the testing of a theory: consequences are deduced from the theory and are compared with known facts, which is something known by many. Induction, on the other hand, is used in creating hypotheses in both experimental and theoretical investigations and is again used in generalizing the results of tests (a) to all other possible tests in experimental investigation, and (b) also to some phenomena that cannot be used to test the theory created using the hypothesis, or hypotheses, that are produced inductively. When Popper claims that inductivism can be replaced by deductivism, he is unaware of the fact that induction is used at the beginning of both experimental and theoretical investigations to create hypotheses and again at the end of the investigation to generalize the test results.
But in the rest of the book, Popper concentrates on the generalization of test results, which is done through induction and is what he overlooked to begin with, as explained above. Consequently, Popper proves rightly that scientific knowledge cannot be produced using deductive logic, which is the opposite of what he tried to prove earlier.
The truth is that new knowledge is not a product of logic but is learned from the world about singular phenomena and is generalized through induction. Induction does not yield logically sure knowledge, but evolution created the human brain/mind so that it knows that it has to trust induction. Thus, everyone avoids hitting his or her head against hard objects by learning from past experience through induction. Someone who does not trust such inductive knowledge is punished severely. Similarly, when a scientist or an engineer does not use an accepted theory anywhere in his or her work, he or she is likely to be punished by failure and its consequences of many kinds.
Popper's views should serve to waken up those who seek the comfort of producing all knowledge through deduction only, but in fact, they shed doubt mostly on theories, because a theory is not deduced from anywhere, unlike empirical knowledge is, about some singular phenomena. A theory is constructed and tested by using induction or deduction, as necessary, at various stages of the total process on the basis of empirical knowledge. Popper's views are those of a philosopher who is not familiar with the mission and methods of science and thinks that science is about discovering something that can be called the absolute truth. Read also my evaluation of Kuhn's views.
Another erroneous idea of Popper is that theories can be falsified but cannot be verified. It is true that if a new theory is falsified by a few or even a single test, there is usually no more wish to keep testing it. But when an accepted theory is falsified by one phenomenon, it is not discarded as invalid. Its use continues where it gives good results. It is also true that a theory cannot be verified in an absolute sense, but this is true also about empirical knowledge. The generality of any knowledge is a consequence of induction which is forced upon the mind by the results of evolution, as mentioned. The verification of a theory, or any knowledge, means that it can be used where it gives useful results. Unfortunately, the impossibility of the logical or experimental validation of knowledge in a general way is seen as a weakness of only theories by those who ignore what a theory is and how it is constructed, tested, and used.
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The content it's great and opening the minds of all the narrow minds in the world. Really complicated for my poor mind but, hopefully I got the main points.










