"Replies to my critics"

20th century most important philoshper of science

concept of "falsifiability"

Bold ideas must take the risk of being false

example of Copernicus or Aristarch

Scientific opponents

Skeptics believe that great changes didn't come through "falsifiability"

Philosophical Opponents

for turning the "logical postivism" approach on its head

Empirical science must include: -boldness of guessing - boldness of predicting

The situation of Marxism and psychoanalysis