Editing Strange loop (section)

{{Original research|date=June 2024}}
{{short description|Cyclic structure that goes through several levels in a hierarchical system}}
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A '''strange loop''' is a [[Cycle (graph theory)|cyclic]] structure that goes through several levels in a [[hierarchical]] system. It arises when, by moving only upwards or downwards through the system, one finds oneself back where one started.
Strange loops may involve [[self-reference]] and [[paradox]]. The concept of a strange loop was proposed and extensively discussed by [[Douglas Hofstadter]] in ''[[Gödel, Escher, Bach]]'', and is further elaborated in Hofstadter's book ''[[I Am a Strange Loop]]'', published in 2007.

A '''tangled hierarchy''' is a [[hierarchy|hierarchical]] consciousness system in which a strange loop appears.