Speaker(s): Professor John Worrall | Editor's note: We apologise for the poor quality audio in this podcast. Many people unreflectingly think that 'Man' plays a special role in the Universe. Although this view was endorsed by Aristotelian cosmology, revolutionary developments in science, particularly those associated with Copernicus and with Darwin, seem to have made it entirely untenable. So what does science teach us about our place in the Universe? John Worrall joined LSE as an undergraduate in 1965, initially as a student of statistics. But, seduced by Karl Popper's lectures, soon switched to a course that was part statistics and mathematics and part philosophy. He came under the influence of Imre Lakatos - who tried to convert him to his own brand of 24 hour a day philosophy. He studied for a PhD under Lakatos - developing the latter's methodology of research programmes and testing it against a detailed case history from 19th century physics. Worrall was appointed to a Department of Philosophy, Logic and Scientific Method lectureship at LSE in 1971, becoming Professor in 1998. Having for many years played the cricket of pure reason for the LSE Staff Cricket XI, his chief Departmental role is now as leader of its rock n roll band (The Critique of Pure Rhythm - name not his idea). Worrall's main intellectual interests are in theory-change in science - and its impact on the twin theses of scientific rationality and scientific realism. More recently he has developed a major interest in methodological and philosophical issues in medicine particularly concerned with clinical trials and the general issue of the warrant for causal claims in medicine. He was for 10 years the editor of The British Journal for the Philosophy of Science, has held visiting fellowships at the Universities of Pittsburgh and of Otago, and has lectured around the world - in the USA, China, South America, Australia and New Zealand as well as Eastern and Western Europe. He is former President of the British Society for the Philosophy of Science. Roman Frigg is Professor of Philosophy in the Department of Philosophy, Logic and Scientific Method, Director of the Centre for Philosophy of Natural and Social Science (CPNSS), and Co-Director of the Centre for the Analysis of Time Series (CATS) at LSE. The Centre for Philosophy of Natural and Social Science (CPNSS), established in 1990, aims to promote research into philosophical, methodological and foundational questions arising in the natural and the social sciences, as well as their application to practical problems.