Browse Definitions :
Definition

Hofstadter's law

Hofstadter’s law is the observation that “It always takes longer than you expect, even when you take into account Hofstadter's Law.” In other words, time estimates for how long anything will take to accomplish always fall short of the actual time required -- even when the time allotment is increased to compensate for the human tendency to underestimate it. The non-specificity of the reference (it) reflects that the law is broadly applicable in any situation where the task is complex. Hofstadter’s law is frequently evoked in IT contexts and is particularly relevant to time management, productivity, project management and software development.

Douglas Hofstadter, a cognitive scientist and author, introduced the law in his 1979  book Gödel, Escher, Bach: An Eternal Golden Braid. The system under discussion was chess-playing computers, which had been predicted to beat humans within 10 years. However, ten years after that prediction, humans were still winning. Hoftstadter wrote that the inablility for machines to triumph by that time was "just one more piece of evidence for the rather recursive Hofstadter's Law." (In fact, it wasn’t until 1996 that IBM’s Deep Blue computer beat the reigning world champion Garry Kasparov.)

Hofstadter’s law illustrates one element of optimism bias, which leads people to overestimate the benefits of some proposed system and underestimate the drawbacks, as well as the time required for completion. It’s also closely related to the ninety-ninety rule proposed by Tom Cargill of Bell Labs: The first 90 percent of the code accounts for the first 90 percent of the development time. The remaining 10 percent of the code accounts for the other 90 percent of the development time.

See a presentation on why everything takes longer than you think it will:

This was last updated in October 2016

Continue Reading About Hofstadter's law

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • biometric verification

    Biometric verification is any means by which a person can be uniquely identified by evaluating one or more distinguishing ...

  • password

    A password is a string of characters used to verify the identity of a user during the authentication process.

  • biometrics

    Biometrics is the measurement and statistical analysis of people's unique physical and behavioral characteristics.

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

SearchStorage
  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

  • VRAM (video RAM)

    VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

  • virtual memory

    Virtual memory is a memory management technique where secondary memory can be used as if it were a part of the main memory.

Close