The document discusses the role of testers in Agile teams. It argues that while methodologies like Scrum and XP do not explicitly mention testers, they can still be valuable members of cross-functional teams. Testers bring a different perspective than programmers as they behave more like users. Their domain knowledge and ability to ask questions can help improve quality. Ultimately, the document says that while testers are not mentioned in Agile, they are still important team members, and that everyone on the team engages in a form of testing.