Karl Popper (1902-1994)
20th century most important philospher
Propositions being judged for their truthness rejected
Scientific statement must be falsifiable
Bold ideas are a daring hypothesis
EX. Copernicus's heliocentric theory
It's scientific when predictions are made
Einstein theory of gravitation
He declared that his theory was false
He declared that if theory did not match calculations, theory would be cancelled
Kepler's ideas were bold, but he done alot more predictions than copernicus
kepler theory tested by Newton and Einstien new theories
Experiments proved Kepler wrong
Boldness of reality
Must be adapted if hypothesis true and daring