Second-system effect

(Sometimes, more euphoniously, "second-system syndrome") When one is designing the successor to a relatively small, elegant, and successful system, there is a tendency to become grandiose in one's success and design an elephantine feature-laden monstrosity.

The term was first used by Fred Brooks in his classic "The Mythical Man-Month.

It described the jump from a set of nice, simple operating systems on the IBM 70xx series to OS/360 on the 360 series.

A similar effect can also happen in an evolving system; see Brooks's Law, creeping elegance, creeping featurism.

See also Multics, OS/2, X, software bloat.

[Jargon File]

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second generation computer
second generation language
second level cache
second normal form
Second-Order Lambda-calculus
Brooks's Law
creeping elegance
creeping featurism
Operating System/360
sector interleave
sector interleaving
sector map
sector mapping
Secure Hash Algorithm