Transcript epsci
Epistemology of Science Zuoyue Wang, 2/10/2011 Epistemology of Science Simplified • Philosophy of Science: How Does Science Make Truth Claims about the Natural World? • Political Science: How Does Science Function as a Model and Tool for Understanding the Human World? • Sociology of Science: How Does Society Fit into Science? • Science Policy: How Does Science Fit into Society? • History of Science: How Did the Debate over These Questions about Science and Its Social Context Actually Play out in History? Einstein on Epistemology of Science • Einstein, 1905 – Special relativity built on ether unobservable • Heisenberg, 1925 – Quantum mechanics built on electronic orbits unobservable • Heisenberg vs. Einstein, 1926 – H: I learned from you – E: A good joke can not be repeated twice! Einstein’s Evolution • Einstein started more as an empiricist • General relativity led him to be a rationalist – Empirical data do not lead to theory; making a theory always involves a leap of faith, but any valid theory would have to be tested with experiment – Thus his pursuit of unified field theory and his belief in a deeper theory underlying quantum mechanics History and Philosophy of Science • Positivist View: Science as a cumulative, progressive process • Karl Popper: Science advances not by proving theories true, but by proving them false and revise them • Thomas Kuhn: Scientific change not purely a cognitive process, but also a social process Thomas Kuhn • Structure of Scientific Revolutions (1962) • Called the most influential book in the social sciences in the second half of the 29th century • Paradigm; Paradigm shift; normal science; scientific community—emphasis on science as a social activity Science Policy • Policy for Science and Science in Policy • Policy for Science – Government funding of science – From “Men of Science” to “Scientific Community” (David Hollinger) – Big Science, Government Funding, Debate over Science and Government – Scientists no longer as pursuers of truth, but more as interest groups Science in Policy • Science in policy refers to how government uses science and technology • Controversial science in policy – Regulatory science – Effects of low dose radiation on human health – Global warming • Debate over – Is science objective? – Are scientists objective and “disinterested”? Science policy-making by voting? • Alvarez: “There is no democracy in physics. We can’t say that one second-rate guy has as much right to opinion as Fermi.” • Yet, Science Policy is not science • Regulatory policy as a negotiated process – FDA, EPA, CDC Advisory Committees often “voted” on recommendations – IPCC also voted on its findings – Sheila Jasanoff, The Fifth Branch: Science Advisers as Policymakers Epistemology of Science Today • Much more complicated than the positivist ideal of progressive science approaching truth and delivering social benefits • We are more aware of the social construction of science and scientific beliefs • We are more wary of scientists with self interest • We are more cautious about scientific and technological solutions to our problems • Yet, science and technology have continued to play a prominent role in our world today due in part to the belief in the epistemological validity of a scientific enterprise that is by and large evidence-based. My Own Research • History of the Discovery of the Equivalence of the Matrix and Wave Mechanics (1985) • In Sputnik’s Shadow: The President’s Science Advisory Committee and Cold War America (2008) – science advising involved social and political construction – The negotiation of original Sputnik Moment • Science is transnational—how science travels across borders and is transformed in the process (“Transnational Science”)