Today’s bad idea is about how ideas get adopted, argued over and rejected: David talks to political philosopher Alan Finlayson about what’s wrong with seeing this as a competitive marketplace. From St. Paul to Citizens United, from John Stuart Mill to Jordan Peterson, what happens when ideas get turned into commodities? Who wins and who loses? And what is an ‘ideological entrepreneur’? Looking for Christmas presents? We have a special Xmas gift offer: give a subscription to PPF+ and your recipient will also receive a personally inscribed copy of David’s new book The History of Ideas. Find out more https://www.ppfideas.com/gifts To sign up for the latest edition of our free fortnightly newsletter, out tomorrow, join our mailing list https://www.ppfideas.com/newsletters Next Bad Idea: Modernisation! Past Present Future is part of the Airwave podcast network. Learn more about your ad choices. Visit megaphone.fm/adchoices