„In object-oriented analysis, we seek to model the world by identifying the classes and objects that form the vocabulary of the problem domain, and in object-oriented design, we invent the abstractions and mechanisms that provide the behavior that this model requires.“

p. 141
Object-oriented design: With Applications, (1991)

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Grady Booch photo
Ed Yourdon photo

„[Object-oriented analysis is] the challenge of understanding the problem domain and then the system's responsibilities in that light.“

—  Ed Yourdon American software engineer and pioneer in the software engineering methodology 1944 - 2016

p. 8-9; as cited in: Elisa Bertino, ‎Susan Urban (1994) Object-Oriented Methodologies and Systems. p. 160.
Object-oriented design (1991)

Grady Booch photo
Ivar Jacobson photo

„The analysis model will not be a reflection of what the problem domain looks like… The reason is simply to get a more maintainable structure where changes will be local and thus manageable. We thus do not model reality as it is, as object orientation is often said to do, but we model the reality as we want to see it and to highlight what is important in our application.“

—  Ivar Jacobson Swedish computer scientist 1939

p. 185: cited in: " Object Oriented Software Engineering: A Use Case Driven Approach Ivar Jacobson, et al. (1992) http://tedfelix.com/software/jacobson1992.html", Book review by Ted Felix on tedfelix.com, 2006.
Object-Oriented Software Engineering: A Use Case Driven Approach (1992)

Grady Booch photo

„Perhaps the greatest strength of an object-oriented approach to development is that it offers a mechanism that captures a model of the real world.“

—  Grady Booch American software engineer 1955

Grady Booch (1986) Software Engineering with Ada p. 220. cited in: David J. Gilmore et al. (1994) User-Centred Requirements for Software Engineering Environments. p. 108

Ivar Jacobson photo
Grady Booch photo
Herbert A. Simon photo

„The principle of bounded rationality [is] the capacity of the human mind for formulating and solving complex problems is very small compared with the size of the problems whose solution is required for objectively rational behavior in the real world — or even for a reasonable approximation to such objective rationality.“

—  Herbert A. Simon, livro Administrative Behavior

p. 198.
1940s-1950s, Administrative Behavior, 1947
Variante: The principle of bounded rationality [is] the capacity of the human mind for formulating and solving complex problems is very small compared with the size of the problems whose solution is required for objectively rational behavior in the real world — or even for a reasonable approximation to such objective rationality.

Ed Yourdon photo
Milton Friedman photo
Béla H. Bánáthy photo
Grady Booch photo

„A class is a set of objects that share a common structure and a common behavior“

—  Grady Booch American software engineer 1955

p. 513
Object-oriented design: With Applications, (1991)

Gottfried Leibniz photo

„This miracle of analysis, this marvel of the world of ideas, an almost amphibian object between Being and Non-being that we call the imaginary number.“

—  Gottfried Leibniz German mathematician and philosopher 1646 - 1716

Ce miracle de l'Analyse, prodige du monde des idées, objet presque amphibie entre l'Être et le Non-être, que nous appelons racine imaginaire.
Quoted in Singularités : individus et relations dans le système de Leibniz (2003) by Christiane Frémont

Humberto Maturana photo
Joseph Louis Lagrange photo

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“