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Overview[ edit ] The classical view of the philosophy of science is that it is the goal of science to prove hypotheses like "All swans are white" or to induce them from observational data. The Inductivist methodology supposes that one can somehow move from a series Scientific hypothesis essay statements such as 'here is a white swan', 'over there is a white swan', and so on, to a universal statement such as 'all swans are white'.
As observed by David HumeImmanuel Kant and later by Popper and others, this method is clearly deductively invalid, since it is always possible that there may be a non-white swan that has eluded observation  and, in fact, the discovery of the Australian black swan demonstrated the deductive invalidity of this particular statement.
This is known as the problem of induction. One solution to the problem of induction, proposed by Immanuel Kant in Critique of Pure Reasonis to consider as valid absolutely a priori the conclusions that we would otherwise have drawn from these dubious inferential inductions.
Falsificationism thus strives for questioning, for falsification, of hypotheses instead of proving them or trying to view them as valid in any way. For a statement to be questioned using observation, it needs to be at least theoretically possible that it can come Scientific hypothesis essay conflict with observation.
A key observation of falsificationism is thus that a criterion of demarcation is needed to distinguish those statements that can come into conflict with observation and those that cannot, but the criterion itself concerns only the logical form of the theory: I shall require that [the] logical form [of the theory] shall be such that it can be singled out, by means of empirical tests, in a negative sense: This logical form informally implies the possibility of refutations by experience because, in its informal methodological context, a basic statement must be intersubjective and interpretable in terms of observations.
Objections can be raised against falsifiability as a criterion of demarcation similar to those which can be raised against verifiability. For example, as pointed out by many  and reformulated by Colin McGinn, [w]e have to be able to infer that if a falsifying result has been found in a given experiment it will be found in future experiments; My proposal is based upon an asymmetry between verifiability and falsifiability; an asymmetry which results from the logical form of universal statements.
For these are never derivable from singular statements, but can be contradicted by singular statements.
Moreover, this singular existential statement is empirical: This shows the fundamental difference between verifiability and falsifiability. Also, in the logical form of the theory, there is no notion of future experiments, but only a formal class of basic statements that contradict it.
For example, while "all men are mortal" is unfalsifiable, it is a logical consequence of the falsifiable theory that "all men die years after their birth at the latest".
Popper invented the notion of metaphysical research programs to name such unfalsifiable ideas that guide the search for a new theory.
At the logical level, scientists use deductive logic to attempt to falsify theories. At the non-logical level, they decide on some criteria, which use falsification and other factors, to pick which theories they will study, improve, replace, apply or further test.
These other criteria may take into account a metaphysical research program. They are not considered in the formal falsifiability criterion, but they can give a meaning to this criterion. Needless to say, for Popper, these other criteria, the so called rules of the game, are necessary.
Some philosophers consider them as parts of Popper's demarcation criterion, but Popper viewed them only as a necessary context. In contrast to Positivismwhich held that statements are meaningless if they cannot be verified or falsified, Popper claimed that falsifiability is merely a special case of the more general notion of critical rationalism even though he admitted that empirical refutation is one of the most effective methods by which theories can be criticized.Scientific Method Diagram Printout Write an outline of your scientific experiment.
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