Ruffer Fund Manager Duncan MacInnes, Dominic Frisby, British author and comedian, and Adam Dixon, Adam Smith Chair in Sustainable Capitalism join Merryn for the first day of her run at Adam Smith's Panmure House for the Edinburgh Fringe Festival. 

They tackle questions like are political leaders dulling innovation with regulation? Is too much protectionism bad for capitalism? And how should investors position themselves at a time when politicians are too focused on dividing the pie, rather than growing it?