Projections (Star Trek: Voyager) Projections (Star Trek: Voyager) "Projections" is the 19th (3rd in the ) episode of the American science fiction television program "". Originally slated for the first season, the episode originally aired on September 11, 1995, and tells the story of having an identity crisis on the holodeck regarding whether he or the world around him is the illusion. Brannon Braga compared "Projections" to the work of René Descartes, and wrote the episode around the premise of "cogito ergo sum", questioning whether the Doctor or the "Voyager" is the illusion. Beating out LeVar Burton (Geordi La Forge) for the guest appearance,
Cogito, ergo sum familiar form of the phrase in his 1641 "Meditations on First Philosophy". The earliest written record of the phrase in Latin is in his 1644 "Principles of Philosophy", where, in a margin note (see below), he provides a clear explanation of his intent: "[W]e cannot doubt of our existence while we doubt". Fuller forms of the phrase are attributable to other authors. The phrase first appeared (in French) in Descartes's 1637 "Discourse on the Method" in the first paragraph of its fourth part: In 1641, Descartes published (in Latin) "Meditations on first philosophy" in which he referred to the proposition,