Popper
Crossword Clue and Answers
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Crossword Answers
10 letters
KARLPOPPER
British philosopher (born in Austria) who argued that scientific theories can never be proved to be true, but are tested by attempts to falsify them (1902-1994)
20 letters
SIRKARLRAIMUNDPOPPER
British philosopher (born in Austria) who argued that scientific theories can never be proved to be true, but are tested by attempts to falsify them (1902-1994)