The document discusses the role of the ESP (English for Specific Purposes) teacher. It identifies five key roles for ESP practitioners: teacher, collaborator who works with subject specialists, course designer and provider of suitable materials, researcher to evaluate materials, and evaluator who provides feedback to students. It also notes three main problems ESP teachers face: a lack of established orthodoxy to guide them, needing expertise in new subject matter domains, and navigating changes in the status of English teaching from a subject to a service industry for other specialisms.