"Yes, but How do you Know? Scepticism and Philosophy." PHILOSOPHER'S ZONE June 5, 2010.

This week, we meet Stephen Hetherington, Professor of Philosophy at the University of New South Wales, who believes that sceptical thinking is one of the most authentic forms of philosophical thinking there is. Scepticism isn't just any old refusal to believe: it's an orderly reconsideration of what we know and why we think we know it. How much can we know about our surroundings? Do we in fact have any surroundings or could we just be disembodied brains in vats being fed what feels like experience? Scepticism is a radical way of thinking and, in a way, it's the beginning of thinking philosophically. Listen here: http://www.abc.net.au/rn/philosopherszone/stories/2010/2915047.htm.