Lecture 3-02-09 - Lecture 3/2/09 Philosophy of Karl Popper...

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Lecture 3/2/09 Philosophy of Karl Popper Popper was a school teacher in Vienna in the 1930s. Member of the Vienna circle. Concerned to separate science from pseudoscience. Popper believed science had a special method This was the method of falsification Scientists should try and falsify their theories Induction How do we justify inductive inference? Premise 1: All dogs eat bones True Premise 2: Sam is my dog True Conclusion: Sam eats bones True In this example we deduce something new from two true premises. Because both premises are true the conclusion we deduce is true. Premise 1: All dogs have five legs False Premise 2: Sam is my dog True Conclusion: Sam has five legs False In this example of deductive inference we reach a false conclusion but the deductive reasoning is perfectly valid. Inductive Inference In inductive inference we induce a universal law from many singular instances S1- Copper expands when heated S2 - Silver expands when heated
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Lecture 3-02-09 - Lecture 3/2/09 Philosophy of Karl Popper...

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