Falsification in Science - the “Hypothetico-deductive” method
“Scientific knowledge is proven knowledge. Scientific theories are derived in some rigorous way from the facts of experience acquired by observation and experiment. Science is based on what we can see and hear and touch, etc. Personal opinion or preferences and speculative imaginings have no place in science. Science is objective. Scientific knowledge is reliable knowledge because it is objectively proven knowledge.”
– Alan Chalmers, What Is This Thing Called Science?, 1982, p.1.
Chalmers represents the traditional inductivist view with his statement on science. An inductivist makes observations, then creates a general statement that aims to explain the encountered phenomenon. However, Karl Popper, another scientific philosopher, has completely rejected this scientific method and has argued against the sole use of induction when conducting scientific research. Unsatisfied with Chalmers’ method, and the traditional inductive method in general, he instead made his own ‘version’ of the scientific method, dubbed ‘the hypothetico-deductive method’. These two scientific methods contrast each other, and to demonstrate their difference Chalmers’ statement will be evaluated using the typical view of one who subscribes to Popper’s ‘hypothetico-deductive’ method of falsification. I will then evaluate the two methods, commenting on their individual limitations and merits.
To contrast the two methods, Popper’s
Joel Achenbach, the author of the article, “Why Do Reasonable People Doubt Science?” starts of by saying that in today's era the people often disagree with scientific reasoning. The world we live in today is so full of problems it's hard to tell what is real anymore. The decision is left to the individual to decide what to believe is true or false, and then how there going to put their beliefs into action. Achenbach later explains in his article that the scientific method pushes back all the opinions and unfolds the real truth.
The development of the scientific method in the late 1500’s to the early 1600’s was a crucial stepping-stone in the science community. The scientific method is based upon observations, hypotheses and experimentation. The concept is rather simple, and can be applied to many areas of study. Once an observation is made, the observer can make a hypothesis as to why that phenomenon occurs and can then design an experiment to prove whether or not that hypotheses is valid. Although the scientific method has been extremely useful in the discovery of various things from usages of medications to studying animal behavior, there are still those who question the usage of this tool. These critics claim that since
Science should not be seen as a collection of facts, concepts, and useful ideas about nature, or even the organized analysis of nature, although both are common definitions of science. Science is a means of examining nature. In other words, science is a method of discovering reliable knowledge about nature. There are other ways of learning knowledge about nature; nevertheless science is the only way that results in getting hold of of reliable knowledge. Dependable knowledge is material that has high viewpoint of accuracy because its certainty has been defendable by a reliable technique. Reliable data is called standard correct idea, to distinguish reliable facts from belief that is false and unjustified. Every person has beliefs, nonetheless not all facts is steadily true and acceptable. Science is a method
Since the 17th century, the scientific method has served as a memorable procedure for its ability to characterize aspects of natural science. Its reliance on sense and reason allowed it to become the backbone of research for scientists, meant to make the unknown into something better understood and explored. Even still, this tried and true method cannot be deemed completely concrete. In his passage from The Great Influenza, John M. Barry utilizes various rhetorical devices in his process of characterizing scientific research, to demonstrate the similarities between scientists and the early pioneers.
“There must be no barriers to freedom of inquiry. There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors. Our political life is also predicated on openness. We know that the only way to avoid error is to detect it and that the only way to detect it is to be free to inquire. And we know that as long as [we] are free to ask what [we] must, free to say what [we] think, free to think what [we] will, freedom can never be lost, and science can never regress.”
What is Science? When it comes to the word ‘science’ most of the people have some kind of knowledge about science or when they think of it there is some kind of image related to it, a theory, scientific words or scientific research (Beyond Conservation, n.d.). Many different sorts of ideas float into an individual’s mind. Every individual has a different perception about science and how he/she perceives it. It illustrates that each person can identify science in some form. It indicates that the ‘science’ plays a vital role in our everyday lives (Lederman & Tobin, 2002). It seems that everyone can identify science but cannot differentiate it correctly from pseudo-science and non-science (Park, 1986). This essay will address the difference between science, non-science and pseudo-science. Then it will discuss possible responses to the question that what should we do when there is a clash between scientific explanation and non-scientific explanation. Then it will present a brief examination about the correct non-scientific explanation.
The following essay aims to discuss the inconsistencies between the inductivist and Popper’s points of view of science rationality of science in light of claims that the scientific method is inductive yet an inductive method is no. I think is rational to say that inductivist view of science has significant contradiction that Popper’s view solves. To support Popper’s view my argument will introduce the inductivist and falsificationsist views and I will focus in showing the issues of considered science as objective, scientific knowledge as proven and nature as uniform as well as the differences between inductivism and falsificationism to the creation of hypothesis.
The inductivist account of science recognizes five steps which are essential to scientific progress. First, scientists compile a large body of facts from observation and experiment. Using the principle of induction, these facts can be generalized to form the basis for a theory or law. Then, once a theory has been developed, scientists can use the theory as part of a valid logical argument to make new predictions or explanations of phenomena. According to Chalmers, the inductivist account has “a certain appeal” to it, namely, that all of scientific progress can be seen as the result of five fundamental leaps of thought (54). “Its attraction lies in the fact that it does seem to capture in a formal way
In this essay I attempt to answer the following two questions: What is Karl Popper’s view of science? Do I feel that Thomas Kuhn makes important points against it? The two articles that I make reference to are "Science: Conjectures and Refutations" by Karl Popper and "Logic of Discovery or Psychology of Research?" by Thomas Kuhn.
Karl Popper is commonly regarded as one of the greatest philosophers of science in the 20th Century. He is well known for his rejection of the inductivist viewpoint of the scientific method, in which one uses observation to propose a law to generalize an observed pattern, and later confirm that law through more observation. Popper states that “induction cannot be logically justified” (Popper 14). Inductivism relies on the process of inductive reasoning which is a logical process in which multiple premises, all thought to be true and found to be true most of the time, are combined to obtain a conclusion and in many cases formulate a law or theory. Popper rejected the inductivist viewpoint in favor of a theory called empirical falsification which holds that a theory can never be proven, but it can be falsified, and therefore it can and needs to be scrutinized through experimentation.
Popper and Kuhn held differing views on the nature of scientific progress. As seen in Popper’s falsification theory, he held that theories can never be proved only disproved or falsified. Once a theory is proved false we move on to the next. Kuhn, on the other, hand argued a new paradigm may solve puzzles better than the old one but you cannot describe the old science as false. Both seem to share the Kantian idea that the really real, independently existing world is completely unknowable. Kuhn further asserts that the empirical world, which is knowable, is partly constructed by our categories and concepts. The fundamental difference in their views are best stated in Kuhn’s own words, “A very different approach to this whole network of problems has been developed by Karl R. Popper who denies the existence of any verification procedures at all. Instead he emphasizes the importance of falsification, i.e., of the test that, because its outcome is negative, necessitates the rejection of an established theory. Clearly, the role thus attributed to falsification is much like the one this essay assigns to anomalous experiences, i.e., to experiences that, by evoking crisis, prepare the way for a new theory. Nevertheless, anomalous experiences may not be identified with falsifying ones.”(Kuhn, 145) As seen by this passage, the fundamental difference between Popper and Kuhn is that Popper disregards “verification” and Kuhn asserts that “falsification” only takes place once a
In the 17th century Francis Bacon introduced induction as the new method for producing scientific theories. However inductive reasoning is riddled with problems that make it unsatisfactory for demarcating science. Hume’s problem of induction
Assumptions in the title of this essay imply that results, theories and laws resulting from the current system of peer review multiple perspectives produce completely infallible objective truth, this is a false premise. Whilst the group of knowers known as the scientific community have collectively less bias than one lone knower trying to understand the universe, there is still collective and engrained level of institutional bias. The same problems of confirmation bias and expectation are present in a group of knowers just as they are with one single knower. According to Karl Popper (1902-1994) the best way to eliminate any expectation and confirmation bias was to falsify and disprove rather than confirm one’s hypothesis and predictions. Popper argues: no matter how convincing an argument or theory is, all that is needed to disprove it is one piece of valid counterclaiming evidence. Whilst this theory is valid on an individual level, it really becomes an effective tool in the objectivity of science on a large scale. Despite this attempt at objectifying and ‘protecting against’ error and bias it is inadequate due to inherent flaws in the scientific method. Induction, moving from the specific to the general, is the key element in scientific logic. Any theory or law ‘proved’ through this logic has some key flaws: the main flaw being that inductive logic can never be certain of any event happening or of any prediction. Richard van de Lagemaat
In the natural sciences, theories may not be proven experimentally correct; however, it can be falsified through experimental evidence. Aristotle’s idea of spontaneous generation, organisms descending from inanimate matter, was falsified by Pasteur. As Pasteur’s falsification was drawn from the cell theory, this shows how scientific theories are
The nature and process of science are a collection of things, ideas, and guidelines. “The purpose of science is to learn about and understand our universe more completely” (Science works in specific ways, 3). Science works with evidence from our world. If it doesn’t come from the natural world, it isn’t science. You need to be creative and have flexible thoughts and ideas if you want to be a scientist. Science always brings up new ideas and theories and if you aren’t flexible to those ideas you can’t be a scientist. Science has been in our world for a long time. It is deep into our history and our cultures. The principals of science; are all about understanding our world using the evidence we collect. If we can’t collect evidence on something we simply cannot understand it. If we don’t understanding something about our world, science says that we can learn about it by collecting evidence (Science has principals, 4). Science is a process; it takes time. You don’t immediately come to a conclusion for your hypothesis a few minutes