 By 1975, structuralist philosophy lost its predominant position in the humanities due to important social and political changes.In architecture, its position was undermined by the increasing popularity of postmodern architecture promoted by authors such as Charles Jencks, Robert Venturi and Denise Scott Brown.Structuralist ideas kept up to inform the work of important architects during and after the postmodern era, which is estimated to have ended by 1995.