eigengrau

https://www.wikiwand.com/en/Eigengrau
"…the uniform dark gray background that many people report seeing in the absence of light."

Throbber

https://www.wikiwand.com/en/Throbber
A throbber is an animated graphical control element used to show that a computer program is performing an action in the background (such as downloading content, conducting intensive calculations or communicating with an external device).[1][2][3] In contrast to a progress bar, a throbber does not convey how much of the action has been completed.

mojibake

https://www.wikiwand.com/en/Mojibake
Mojibake (文字化け; IPA: [mod͡ʑibake]) is the garbled text that is the result of text being decoded using an unintended character encoding.[1]The result is a systematic replacement of symbols with completely unrelated ones, often from a different writing system.

ridiculogram

https://datadrivenecon.wordpress.com/2014/06/05/untangling-the-ridiculogram/

Anyone who’s done any work in the vicinity of network science or, more specifically, seen social scientists attempting network science, will have seen plenty of images…which add little scientific input, but merely dazzle the reader with the complexity and sheer magnitude of the networks being analysed. At a recent talk in Cambridge I heard the legendary Mark Newman refer to these network spaghetti-servings as “ridiculograms”.

stigmergy

https://www.wikiwand.com/en/Stigmergy

Stigmergy is a consensus social network mechanism of indirect coordination, through the environment, between agents or actions.[1] The principle is that the trace left in the environment by an action stimulates the performance of a next action, by the same or a different agent. In that way, subsequent actions tend to reinforce and build on each other, leading to the spontaneous emergence of coherent, apparently systematic activity.[2]

Stigmergy is a form of self-organization social network. It produces complex, seemingly intelligent structures, without need for any planning, control, or even direct communication between the agents. As such it supports efficient collaboration between extremely simple agents, who lack any memory, intelligence or even individual awareness of each other.[1][3]

+
http://www.evolutionofcomputing.org/Multicellular/Stigmergy.html