How Science Grows, Paradigms and Realism and Science Flashcards
who says that many systems of thought claim to have true knowledge about the world?
Popper
why does Popper reject verificationism?
due to the fallacy of induction - he uses the example of swans - having observed a large number of white swans we might assume that all swans are white, it is easily to make further observations to verify this but it still cannot prove all swans are white, so we can never prove a theory is true simply by producing more observations that support it
what is induction?
Induction is a process of moving from observation of particular instances of something to arrive at a general statement or law
what makes science unique is falsificationism which means…
a scientific statement can be proved wrong by evidence. we must be able to say what could falsify a statement when we come to test it.
what does Hawking say?
‘no matter how any times the result of the experiments agree with some theory, you can never be sure that the next time the result will not be contradictory.’
Popper sees scientific theories as open to criticism so flaws can be exposed and better theories develop, what does this explain?
why scientific knowledge grows so quickly
why does science thrive in liberal societies and not in closed societies? give an example
because they believe in free expression and the right to challenge accepted ideas. closed societies are dominated by belief systems that claim to have ultimate truth this stifles the growth of science. for example Galileo was punished for heresy by the church in Rome for claiming the earth revolved around the sun
much of sociology is unscientific and cannot be put to the test with falsification, give an example
Marx predicted that there would be a revolution leading to a classless society this hasn’t happened yet so prediction cannot be falsified so whether there is a revolution or not marxism is still correct
how does Popper suggest that sociology can be scientific?
when it produces hypotheses which can be tested and possibly falsified
give an example of sociology being scientific
Ford hypothesised that comprehensive schooling would produce social mixing of pupils and was able to test this through empirical research
why does Popper believe that untestable ideas aren’t worthless?
because they may be of value if they become testable at some later date
explain what a paradigm is
it is shared by members of the scientific community and defines what their science is
it provides a basic framework of principles and methods within which members work, its a set of norms which scientists accept uncritically which they are rewarded for with career success
why cant science exist without a paradigm?
without general consensus there can only be rival schools of thought, not a science
what does Watkins observe about Popper and Kuhn?
that Popper sees falsification as the unique feature of science while Kuhn argues it is the existence of paradigms
sometimes findings are contrary to the paradigm, what happens when these findings add up?
confidence in the paradigm declines and it breaks down and is replaced with a new one