Article

Fibonacci sequence


  • Fn = Fn-1 + Fn-2 .
  • Each number is the sum of the two preceding ones, starting from 0 and 1.
  • Is ubiquitous: the tree branches, cauliflower and the curves of the human brain, etc. It’s a phenomena surrounding us everywhere.

Weber’s law

  • The difference we can identify between objects is given by a percentage.
  • For example, if 60% difference can be distinguished in an effort between two estimates, we can distinguish that same percentage difference between other estimates and that is corresponding with the Fibonacci Sequence.
  • Fibonacci values work well because they increase by about the same portion each time.

Golden ratio

  • Golden mean or golden section.
  • Two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities.
  • Any two successive Fibonacci Numbers, have ratio very close to the Golden Ratio “φ” which is approximately 1,618034…

Fibonacci sequence / Golden ratio

Resources
wikipedia.org mathsisfun.com wikipedia.org mathsisfun.com mountaingoatsoftware.com productplan.com Jeff Sutherland: Scrum - the art of doing twice the work in half the time

Similar posters

CEDAR Feedback
CEDAR Feedback CEDAR is a structured feedback model providing coaching opportunities via repeated revisiting and readjusting of the feedback and the goals.
STATIK Kanban
STATIK Kanban The Systems Thinking Approach To Introducing Kanban (STATIK) is a repeatable way to start with Kanban resulting in continuous improvement.
Data Model Canvas
Data Model Canvas The Data Product Canvas is a framework for developing data products based organized into 10 blocks within 3 domain areas.
Kanban Practices
Kanban Practices Visualize Visualizing your work provides transparency, identifying the bottlenecks. Create cards for the items you work on. Think of the workflow – statuses that work items go through to make implicit policies explicit, which enable learning how the work works. Limit Work In Process Stop starting, start finishing. Limit the number of items being worked...
Theory Of Constraints
Theory Of Constraints The Theory of constraints says the throughput of any system is limited by at least one constraint slowing it down.
Classes of Service (CoS)
Classes of Service (CoS) Classes of service (CoS) provide a transparent way of categorizing the incoming work items and ensuring they are properly prioritized and governed to lead to meeting customer expectations. They enable managing risk, priorities, and cost of delay. Expedite High-priority items that should be worked on as soon as possible. Expedite class work items have critical...
Seven wastes of software development
Seven wastes of software development Similar to what TPS identified as seven categories of waste in manufacturing, also software development has its own wastes.
Core Kanban Practices
Core Kanban Practices One of the few rules or practices which are the foundation of Kanban are its 3 core practices: Visualize, Limit WIP, and Manage flow.
The prime directive of agile software development
The prime directive of agile software development Acronymat poster: The prime directive of agile software development - Never be blocked, the system must work all the time.
AIDAOR
AIDAOR The AIDAOR is a hierarchical model, where a persona moves through a series of cognitive steps before and after making a purchase decision.