Karl Popper on science and falsification

Karl_PopperKarl Popper (1902 – 1994) was an Austrian born philosopher that spent most of his academic life working in New Zealand and Britain. In his youth, he worked in road construction and cabinet making, but struggled with the toil of heavy labour. Popper obtained his doctorate in psychology in 1928, and by 1937 he had obtained an academic position in New Zealand that enabled him to flee the rise of Nazism in Europe.

Popper completed many political works, but he is most well known for his work on the philosophy of science. Particularly, his proposal that all scientific theory should be falsifiable; that it is a strict condition that a scientific theory should be overturn-able given empirical evidence to its contrary.

In the modern era, Francis Bacon is the father of scientific philosophy with his inductivist method. Bacon’s idea was that one would observe the world, propose a law, and then confirm that law by further observation of many particulars. This law may later be modified or discarded pending further empirical study.

However, David Hume’s criticism of this method was that human beings do not directly perceive the causal connections between events (a.k.a problem of induction). This is a problem for Baconian science in that while one may see certain things and certain activities at certain times, this is by no means proof of any law of operation in nature.

Popper provides a solution for this problem: scientific theory must be falsifiable. The popular example is of the sun rising every morning. Popper states that while there is no way to prove that the sun will rise every morning empirically, one may formulate a scientific theory that the sun will rise every morning. There is no need to reject this theory until there is a morning where the sun does not rise – in which case a new theory will need to be formulated.

Popper works under the assumption that no scientific theory can be proved true, it can only be falsified. In this way it is like ancient Pyrrhonism, where the thought that one way is better than another lays in the deluded belief that one could prove their prejudice true.



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