For over twenty years, Friedman has been investigating the viewer/object relationship, and "the space in between." He has held solo exhibitions at the Museum of Modern Art, New York], Yerba Buena Museum of Art, San Francisco, Magasin 3 in Stockholm, Sweden, The New Museum in New York, the Tel Aviv Art Museum, and others. His work can be found in the museum collections of MoMA, Los Angeles Contemporary Art Museum, the Broad Art Museum, the Solomon Guggenheim Museum, The Metropolitan Museum of Art, Museum of Contemporary Art, Chicago, and the Museum of Contemporary Art, Tokyo. Friedman lives and works in Northampton, Massachusetts.