With a common tongue, could the world solve its problems? In 1887, a Polish eye doctor tried to answer that question by creating a new, easy-to-learn world language, which came to be known as "Esperanto" — literally, "one who hopes". A century later, what can be said for Esperanto's utopian project?

• Guest: Jonathan Cooper, art educator and president of Esperanto NSW
• Producer: Alex Tighe