Account-1: @IA_Forum (Twitter)Account-2: @CatoInstituteDate: Thursday, October 1, 2015Body: Bruce Tuckman writes: In Defense of Derivatives: From Beer to the Financial Crisis http://ow.ly/ST5qO via @CatoInstituteLink: https://twitter.com/IA_Forum/status/649600976433881089Social Action: featured in a tweet