Added Ringelmann effect

README.md

@@ -10,77 +10,74 @@ Like this project? Please considering [sponsoring me](https://github.com/sponsor
 
 <!-- vim-markdown-toc GFM -->
 
-- [Introduction](#introduction)
-- [Laws](#laws)
-    - [90–9–1 Principle (1% Rule)](#9091-principle-1-rule)
-    - [Amdahl's Law](#amdahls-law)
-    - [The Broken Windows Theory](#the-broken-windows-theory)
-    - [Brooks' Law](#brooks-law)
-    - [CAP Theorem (Brewer's Theorem)](#cap-theorem-brewers-theorem)
-    - [Clarke's three laws](#clarkes-three-laws)
-    - [Conway's Law](#conways-law)
-    - [Cunningham's Law](#cunninghams-law)
-    - [Dunbar's Number](#dunbars-number)
-    - [The Dunning-Kruger Effect](#the-dunning-kruger-effect)
-    - [Fitts' Law](#fitts-law)
-    - [Gall's Law](#galls-law)
-    - [Goodhart's Law](#goodharts-law)
-    - [Hanlon's Razor](#hanlons-razor)
-    - [Hick's Law (Hick-Hyman Law)](#hicks-law-hick-hyman-law)
-    - [Hofstadter's Law](#hofstadters-law)
-    - [Hutber's Law](#hutbers-law)
-    - [The Hype Cycle & Amara's Law](#the-hype-cycle--amaras-law)
-    - [Hyrum's Law (The Law of Implicit Interfaces)](#hyrums-law-the-law-of-implicit-interfaces)
-    - [Input-Process-Output (IPO)](#input-process-output-ipo)
-    - [Kernighan's Law](#kernighans-law)
-    - [Linus's Law](#linuss-law)
-    - [Metcalfe's Law](#metcalfes-law)
-    - [Moore's Law](#moores-law)
-    - [Murphy's Law / Sod's Law](#murphys-law--sods-law)
-    - [Occam's Razor](#occams-razor)
-    - [Parkinson's Law](#parkinsons-law)
-    - [Premature Optimization Effect](#premature-optimization-effect)
-    - [Putt's Law](#putts-law)
-    - [Reed's Law](#reeds-law)
-    - [The Law of Conservation of Complexity (Tesler's Law)](#the-law-of-conservation-of-complexity-teslers-law)
-    - [The Law of Demeter](#the-law-of-demeter)
-    - [The Law of Leaky Abstractions](#the-law-of-leaky-abstractions)
-    - [The Law of the Instrument](#the-law-of-the-instrument)
-    - [The Law of Triviality](#the-law-of-triviality)
-    - [The Unix Philosophy](#the-unix-philosophy)
-    - [The Scout Rule](#the-scout-rule)
-    - [The Spotify Model](#the-spotify-model)
-    - [The Two Pizza Rule](#the-two-pizza-rule)
-    - [Wadler's Law](#wadlers-law)
-    - [Wheaton's Law](#wheatons-law)
-- [Principles](#principles)
-    - [All Models Are Wrong (George Box's Law)](#all-models-are-wrong-george-boxs-law)
-    - [Chesterton's Fence](#chestertons-fence)
-    - [The Dead Sea Effect](#the-dead-sea-effect)
-    - [The Dilbert Principle](#the-dilbert-principle)
-    - [The Pareto Principle (The 80/20 Rule)](#the-pareto-principle-the-8020-rule)
-    - [The Shirky Principle](#the-shirky-principle)
-    - [The Peter Principle](#the-peter-principle)
-    - [The Robustness Principle (Postel's Law)](#the-robustness-principle-postels-law)
-    - [SOLID](#solid)
-    - [The Single Responsibility Principle](#the-single-responsibility-principle)
-    - [The Open/Closed Principle](#the-openclosed-principle)
-    - [The Liskov Substitution Principle](#the-liskov-substitution-principle)
-    - [The Interface Segregation Principle](#the-interface-segregation-principle)
-    - [The Dependency Inversion Principle](#the-dependency-inversion-principle)
-    - [The DRY Principle](#the-dry-principle)
-    - [The KISS principle](#the-kiss-principle)
-    - [YAGNI](#yagni)
-    - [The Fallacies of Distributed Computing](#the-fallacies-of-distributed-computing)
-    - [The Principle of Least Astonishment](#the-principle-of-least-astonishment)
-- [Reading List](#reading-list)
-- [Online Resources](#online-resources)
-- [PDF eBook](#pdf-ebook)
-- [Podcast](#podcast)
-- [Translations](#translations)
-- [Related Projects](#related-projects)
-- [Contributing](#contributing)
-- [TODO](#todo)
+* [Introduction](#introduction)
+* [Laws](#laws)
+    * [90–9–1 Principle (1% Rule)](#9091-principle-1-rule)
+    * [Amdahl's Law](#amdahls-law)
+    * [The Broken Windows Theory](#the-broken-windows-theory)
+    * [Brooks' Law](#brooks-law)
+    * [CAP Theorem (Brewer's Theorem)](#cap-theorem-brewers-theorem)
+    * [Conway's Law](#conways-law)
+    * [Cunningham's Law](#cunninghams-law)
+    * [Dunbar's Number](#dunbars-number)
+    * [The Dunning-Kruger Effect](#the-dunning-kruger-effect)
+    * [Fitts' Law](#fitts-law)
+    * [Gall's Law](#galls-law)
+    * [Goodhart's Law](#goodharts-law)
+    * [Hanlon's Razor](#hanlons-razor)
+    * [Hick's Law (Hick-Hyman Law)](#hicks-law-hick-hyman-law)
+    * [Hofstadter's Law](#hofstadters-law)
+    * [Hutber's Law](#hutbers-law)
+    * [The Hype Cycle & Amara's Law](#the-hype-cycle--amaras-law)
+    * [Hyrum's Law (The Law of Implicit Interfaces)](#hyrums-law-the-law-of-implicit-interfaces)
+    * [Kernighan's Law](#kernighans-law)
+    * [Linus's Law](#linuss-law)
+    * [Metcalfe's Law](#metcalfes-law)
+    * [Moore's Law](#moores-law)
+    * [Murphy's Law / Sod's Law](#murphys-law--sods-law)
+    * [Occam's Razor](#occams-razor)
+    * [Parkinson's Law](#parkinsons-law)
+    * [Premature Optimization Effect](#premature-optimization-effect)
+    * [Putt's Law](#putts-law)
+    * [Reed's Law](#reeds-law)
+    * [Ringelmann effect](#ringelmann-effect)
+    * [The Law of Conservation of Complexity (Tesler's Law)](#the-law-of-conservation-of-complexity-teslers-law)
+    * [The Law of Demeter](#the-law-of-demeter)
+    * [The Law of Leaky Abstractions](#the-law-of-leaky-abstractions)
+    * [The Law of Triviality](#the-law-of-triviality)
+    * [The Unix Philosophy](#the-unix-philosophy)
+    * [The Scout Rule](#the-scout-rule)
+    * [The Spotify Model](#the-spotify-model)
+    * [The Two Pizza Rule](#the-two-pizza-rule)
+    * [Wadler's Law](#wadlers-law)
+    * [Wheaton's Law](#wheatons-law)
+* [Principles](#principles)
+    * [All Models Are Wrong (George Box's Law)](#all-models-are-wrong-george-boxs-law)
+    * [Chesterton's Fence](#chestertons-fence)
+    * [The Dead Sea Effect](#the-dead-sea-effect)
+    * [The Dilbert Principle](#the-dilbert-principle)
+    * [The Pareto Principle (The 80/20 Rule)](#the-pareto-principle-the-8020-rule)
+    * [The Shirky Principle](#the-shirky-principle)
+    * [The Peter Principle](#the-peter-principle)
+    * [The Robustness Principle (Postel's Law)](#the-robustness-principle-postels-law)
+    * [SOLID](#solid)
+    * [The Single Responsibility Principle](#the-single-responsibility-principle)
+    * [The Open/Closed Principle](#the-openclosed-principle)
+    * [The Liskov Substitution Principle](#the-liskov-substitution-principle)
+    * [The Interface Segregation Principle](#the-interface-segregation-principle)
+    * [The Dependency Inversion Principle](#the-dependency-inversion-principle)
+    * [The DRY Principle](#the-dry-principle)
+    * [The KISS principle](#the-kiss-principle)
+    * [YAGNI](#yagni)
+    * [The Fallacies of Distributed Computing](#the-fallacies-of-distributed-computing)
+* [Reading List](#reading-list)
+* [Online Resources](#online-resources)
+* [PDF eBook](#pdf-ebook)
+* [Podcast](#podcast)
+* [Translations](#translations)
+* [Related Projects](#related-projects)
+* [Contributing](#contributing)
+* [TODO](#todo)
 
 <!-- vim-markdown-toc -->
 
@@ -577,6 +574,15 @@ See also:
 - [Metcalfe's Law](#metcalfes-law)
 - [Dunbar's Number](#dunbars-number)
 
+### Ringelmann effect
+
+[Ringelmann effect on Wikipedia](https://en.wikipedia.org/wiki/Ringelmann_effect)
+
+The Ringelmann effect is the tendency of an individual to become increasingly inefficient as more and more people are involved in a task. In other words, as more individuals are added to a team, the more the average individual performance decreases. Multiple causes are believed to be at work, including social loafing and loss of coordination.
+
+See also:
+- [Brooks' Law](#brooks-law)
+
 ### The Law of Conservation of Complexity (Tesler's Law)
 
 [The Law of Conservation of Complexity on Wikipedia](https://en.wikipedia.org/wiki/Law_of_conservation_of_complexity)