In these presentations from October 2009's Creative Time Summit: Revolutions in Public Practice, Project Row Houses's Rick Lowe discusses his project with Wendy Ewald, in which they explore informal and non-monetary exchange economies, and manners in which one may expand one's conceptions and awareness of non-marketplace economies, discussing in particular his investigations of these notions in Houston. Vik Muniz, after working for much of his life in art world circles, wonders where all the other people are; this pursuit has led him to pursue more inclusive methods of art and question what role art can have in the lives of those not in or around these circles. Carolina Caycedo discusses her practice of bartering and exchange, one that includes objects and ideas both, and Harrell Fletcher explains how unintentionally receiving a free rug led him to explorations of wealth-redistribution methods. Julieta Aranda, co-founder of e-flux, discusses her recently started project time/bank, which seeks to create an arts-specific time-based currency in order to redefine the economic standards to which artists, among others, are forced to adhere (39 minutes).