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Science is based on fact. Cold, unchanging, unarguable facts. Or perhaps not.

Updated Thursday, 16th July 2015

Can scientific theories only really be called 'scientific' if they can be proven false? Karl Popper thought so...

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Karl Popper believed that human knowledge progresses through 'falsification'. A theory or idea shouldn't be described as scientific unless it could, in principle, be proven false.




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