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→Sigmund Freud
=====Sigmund Freud=====
## <nowiki>In what have been called his two "[[topology|topographies]]" (the first dating from 1900 and the second from 1923), [[Freud]] resorted to [[schema]]s to represent the various parts of the [[psychic apparatus]] and their interrelations. These schemas implicitly posited an equivalence between psychic space and Euclidean space. </nowiki>
[[Freud]] used spatial metaphors to describe the psyche in ''[[The Interpretation of Dreams]]'', where he cites G. T. Fechner's idea that the scene of action of dreams is different from that of waking ideational life and proposes the concept of 'psychical locality'. [[Freud]] is careful to explain that this concept is a purely topographical one, and must not be confused with physical locality in any anatomical fashion.<ref>Freud, 1900a: SE V, 536</ref> His "[[topology|first topography]]" divided the [[psyche]] into three systems: the [[conscious]] (Cs), the [[preconscious]] ([[Pcs]]) and the [[unconscious]] ([[Ucs]]). The "[[topology|second topography]]" divided the [[psyche]] into the three agencies of the [[ego]], the [[superego]] and the [[id]].
