Question: Robin Hahnel worked with the editor of Z Magazine that was born in what year?

Context paragraphs:
Facilitation board (economics): A facilitation board is a proposed economic institution conceived by economists Michael Albert and Robin Hahnel which act in systems of economic democracy as agencies that facilitate information exchange and processing for collective consumption proposals and for large-scale investment projects, workers requests for changing places of employment, and individuals and families seeking to find membership in living units and neighborhoods, among other functions.

Participatory economics: Participatory economics, often abbreviated pare-con, is an economic system based on participatory decision making as the primary economic mechanism for allocation in society.  In the system the say in decision-making is proportional to the impact on a person or group of people.  Participatory economics is a form of decentralized economic planning and socialism involving the common ownership of the means of production.  It is a proposed alternative to contemporary capitalism and central planning.  This economic model is primarily associated with political theorist Michael Albert and economist Robin Hahnel, who describe participatory economics as an anarchist economic vision.

Daniel Sturm: Daniel Sturm (born December 27, 1970) is a German-American progressive journalist, researcher and author.  He holds a Master's degree in Comparative Literature and the Anthropology of Religion from the University of Tübingen.  Originally from Germany, since moving to the United States, Sturm has worked as a reporter, professor and social justice advocate.  He writes on social justice issues for regional and national media.  Recent articles of his have appeared in Z Magazine, In These Times, The Athens News, and RefugeeWorks.

Michael Albert: Michael Albert (born April 8, 1947) is an American activist, economist, speaker, and writer.  Since the late 1970s he was been involved with publishing left wing literature.  He is known for helping to develop the socioeconomic theory of participatory economics.

Robin Hahnel: Robin Eric Hahnel (born March 25, 1946) is an American economist and professor of economics at Portland State University.  He was a professor at American University for many years and traveled extensively advising on economic matters all over the world.  He is best known for his work on participatory economics with "Z Magazine" editor Michael Albert.

Harsha Walia: Harsha Walia is a social justice activist and journalist who is best known for co-founding the Vancouver chapter of No One Is Illegal.  Walia's writings have appeared in over fifty journals, anthologies, and magazines, including "Briarpatch, Canadian Dimension, Feministing, FUSE Magazine, Left Turn, People of Color Organize, Rabble, Z Magazine", The Winter We Danced, and others.  She has contributed essays to academic journals including "Race and Class", as well as chapters in the anthologies "Power of Youth: Youth and community-led activism in Canada; Beautiful Trouble: A Toolbox for Revolution;" and "Organize!  Building from the Local for Global Justice" She is the author of the book "Undoing Border Imperialism", which indigenous rights activist Roxanne Dunbar-Ortiz has called, "the first extended work on immigration that refuses to make First Nations sovereignty invisible."

Z Communications: Z Communications is a left-wing activist-oriented media group founded in 1986 by Michael Albert and Lydia Sargent.  It is, in broad terms, ideologically libertarian socialist, anticapitalist, and heavily influenced by participatory economics, although much of its content is focused on critical commentary of foreign affairs.  Its publications include "Z Magazine", "ZNet", and "Z Video".

Arbeiter Ring Publishing: Arbeiter Ring Publishing is a worker-owned and operated independent book publisher and distributor that specializes in progressive, radical and anarchist literature (both fiction and non-fiction).  Founded by Todd Scarth and John K. Samson in Winnipeg in 1996, the publishing company was originally based in The Old Market Autonomous Zone (or A-Zone), which also houses Mondragon Bookstore and Coffee House, and other radical and worker-run organizations.  Named after Arbeiter Ring (meaning "Workers' Circle"), a radical Jewish workers' organization (which had a strong presence in Winnipeg at the outset of the 20th century and helped promote Emma Goldman's early visits to the city), Arbeiter Ring also shares a commitment to workers' self-management.  One aspect of this is the organization's promotion of participatory economics (or parecon), an alternative economic model first articulated by Michael Albert and Robin Hahnel.

Complementary holism: Complementary holism is a social theory or conceptual framework proposed by Michael Albert and Robin Hahnel, that sees all societies as consisting of a Human Center and Institutional Boundaries, and that all social relations in the political, economic, community/cultural and kinship "spheres" as mutually interacting to defining our social experiences.  Complementary holism does not rest on an "a priori" assumption that a particular sphere is the base and all else is superstructure, as historical materialism does, but rather that we must take an empirical look at society's development and assess how it has been shaped by all social forces.  Complementary holists agree with Marxists that economics is important to human and social development, just as they do with anarchists in regard to the State or with feminists in regard to gender inequality, but they assert that Marxists see economics, or class conflict, as the sole factor, and they don't believe that economics is always the most important factor.

Lydia Sargent: Lydia Sargent (born January 10, 1942) is an American feminist, writer, author, playwright, and actor.  She was a founder and original member of the South End Press Collective, as well as Z Magazine, which she co-edits and co-produces.  She organizes the Z Communications Institute every year as well as teaching classes there.  She is also a member of the interim consultative committee of the International Organization for a Participatory Society.

Supporting paragraphs: Robin Hahnel Michael Albert
Answer: 1947