Intertwingularity is a term coined by Ted Nelson to express the complexity of interrelations in human knowledge.
Nelson wrote in Computer Lib/Dream Machines (Nelson 1974, p. DM45): "EVERYTHING IS DEEPLY INTERTWINGLED. In an important sense there are no "subjects" at all; there is only all knowledge, since the cross-connections among the myriad topics of this world simply cannot be divided up neatly."[1]
He added the following comment in the revised edition (Nelson 1987, p. DM31): "Hierarchical and sequential structures, especially popular since Gutenberg, are usually forced and artificial. Intertwingularity is not generally acknowledged—people keep pretending they can make things hierarchical, categorizable and sequential when they can't."[2]
Intertwingularity is related to Nelson's coined term hypertext, partially inspired by "As We May Think" (1945) by Vannevar Bush.[3]