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Simplexity is an emerging theory that proposes a possible complementary relationship between complexity and simplicity. The term draws from General Systems Theory, Dialectics (philosophy) and Design. Jeffrey Kluger wrote a book about this phenomenon that describes how house plants can be more complicated than industrial plants, how a truck driver's job can be as difficult as a CEO's and why 90% of the money donated to help cure diseases are given only to the research of 10% of them (and vice versa).
- Complexity tends to rise as system elements specialize and diversify to solve specific challenges.
- Simple interfaces tend to improve the usability of complex systems.
History of the term
Like most terms, it has been shaped through dialogues and discussions, in much the same way that a camel is a horse designed by committee. Several individuals have participated in the development of the meaning of this term in both formal and informal venues. However, one individual in particular (Anuraj Gambhir) is attributed with the creation and popularisation of this term through various presentations and talks at Mobile Technology Conferences around the world.
One of the first formally published instances of the word was in the journal 'Childhood Education' (1924), in the article it seems to be used to discuss education and psychology related issues. 
The complexity of algorithms and of mathematical problems is one of the central subjects of theoretical computer science. Simplexity was whimsically defined by computer scientists Broder and Stolfi as a concept worthy of as much attention as complexity:
"The simplexity of a problem is the maximum inefficiency among the reluctant algorithms that solve P . An algorithm is said to be pessimal for a problem P if the best-cast inefficiency of A is asymptotically equal to the simplexity of P"
The concept of Simplexity was amplified in the mid 1970s by Bruce Schiff (self-described theorist) and restated as "The process by which nature strives towards simple ends by complex means. The result of a simple random act can only be predicted by complicated means. The spatial placement of each atom in a transplanted plant root ball is difficult to predict, but, the plant will adapt it's root ball to the hole, and continue to thrive. This conceptual expression harkens back to original statements of Newton, "Nature is pleased with simplicity", Dalton, "rule of greatest simplicity, and "Einstein, "Nature is the realization of the simplest conceivable mathematical ideas".
Simplexity became the topic of formal discussion at the Hamburg Trend Day in Germany. Among the formal contributors were Peter Wippermann, Dr. Norbert Bolz, David Bosshart, Designer Ora Ito, Markus Shepherd, Susane Tide Frater.
Simplexity: Why Simple Things Become Complex (and How Complex Things Can Be Made Simple) by Jeffrey Kluger details many ways in which simplexity theory can be applied to multiple disciplines. Kluger offers a look at simplexity at work in economics, sports, linguistics, technology, medicine, and dozens of human behaviors. Simplexity also provides insight into how readers can improve their lives by understanding the interplay of complexity and simplicity.
Professor Peter Wipperman proposed a social definition
"We long for simplicity and satisfaction, but in the end usually settle for discount coupons. Simplexity therefore stands for a balance between the growing complexity of daily life and our own personal satisfaction. In order to attain this state, we have to stop always striving to make optimal decisions. In the future, it will be more important to make judgments that are just good enough."
- Jack Cohen. Ian Stewart. (1995). The Collapse of Chaos: Discovering Simplicity in a Complex World. ISBN 0-14-017874-0
- Goldsmith, Julian R. (1953) "A 'Simplexity Principle' and its Relation to Ease of Crystalization". The Journal of Geology. University of Chicago Dept. of geology and paleontology. University of Chicago Press.
- Journal of Personality Assessment.
- Kluger, Jeffrey (2008) Simplexity Simplexity
- Berthoz, Alain (2012). Simplexity: Simplifying Principles for a Complex World
Dan Geesin first used the term 'Simplexity' in his essay 'The melancholy of the set square', 2002, when describing how technology creates more distance through complex interfaces whilst performing a simple task. For example, getting money from a bank machine. He describes how in between the chain of interfaces there is more room for error. More interfaces, more potential problems.
- Plaisant, Catherine (2004) "Information Visualization and the Challenge of Universal Usability"
- Conference Proceedings
- de Groen, P. C., Dettinger, Richard, and Johnson, Pete. Mayo Clinic/IBM computational biology collaboration: A simple user interface for complex queries. In: Universal Access in HCI, Volume 4 of the Proceedings of Human-Computer Interaction (HCI) International, 2003, pages 1083–1087.
- Humane Systems Design blog. "Simplexity: Simple and Complex"
- A Conversation with Anders Hejlsberg (July 2003). "Components, and Simplexity".
- Complexity versus Simplicity: It's Time for Simplexity (Blogeintrag, 2. March 2006)
- Flying Sparks: Simplexity (Blogeintrag 11. March 2006) (German)
- Simplexity.co.uk Simplexity UK management consultancy