In this episode of Rationally Speaking, Julia and Massimo turn their attention to connoisseurship -- or snobbery, depending on your point of view! Fine wines, bottled water, high-end audio equipment -- what all these have in common are passionate customers who are discriminating enough to pay top dollar for subtle differences between options. Or are they? This episode explores the evidence on whether connoisseurs can really tell the difference between, for example, the $7 wine and the $700 one -- or whether it's a distinction without a difference.