Most of us experience time as something that passes, or flows like a river - or at least we think we do. Could it be that the sense of time passing is just an illusion? In this episode of the Philosopher's Zone, we're getting to grips with a theory of time that denies the reality of "flow" - and we're asking why time seems to speed up or slow down in certain situations. Heather Dyke, Associate Professor of Philosophy (University of Otago NZ), discusses this with David Rutledge in an episode of the Philosopher's Zone. For more information and additional episodes, go to: https://www.abc.net.au/radionational/programs/philosopherszone