Form follows function in this chapter's intellectual commitment to the uncertainty of postmodern and poststructural theory. The postmodernism section makes this rationale explicit. Two invited essays follow and form the central part of the chapter. Their themes are broad but interrelated: Realism and the Symbolic: Two Ways of Knowing, and Poststructural Feminism and Research in Educational Communications and Technology. Although some readers will have, for example, prior knowledge of Foucault or Derrida, the last main section, Postmodern and Poststructural Theory: Version 1.0, refers to original sources and to authoritative collections. A short, concluding essay by the first author offers a summarizing contemporaneous perspective: Envoi.