„When a user uses the system, she or he will perform a behaviorally related sequence of transactions in a dialogue with the system. We call such a special sequence a use case.“
„[The process of system design is]... consisting of the development of a sequence of mathematical models of systems, each one more detailed than the last.“
— A. Wayne Wymore American mathematician 1927 - 2011
A. Wayne Wymore (1970) Systems Engineering Methodology. Department of Systems Engineering, The University of Arizona, p. 14/2; As cited in: J.C. Heckman (1973) Locating traveler support facilities along the interstate system--a simulation using general systems theory. p. 43.
„Use cases, scenarios or scripts are roughly synonymous terms for important ways to focus our design activities. I prefer the term use case (although quickly saying it three times can leave your tongue tied) because it emphasizes usage. A use case is a textual description of a sequence of interactions between an actor (roughly corresponding to an external agent or class of users) and the system we are designing. Use cases were first described by Ivar Jacobson in his book “Object Oriented Software Engineering A Use Case Driven Approach.”
Use cases have been around in various forms for quite some time. Jacobson, however, made the keen observation that use cases can be treated as refineable, extensible and even reusable specifications of system requirements. We’ve had these same goals for object designs. We know that it is harder to actually accomplish them than it is to talk about them.“
— Rebecca Wirfs-Brock American software engineer 1953
About What is a Use Case?
„However useful it is for pedagogical purposes, the biological metaphor of style as a sequence of life-stages was historically misleading, for it bestowed upon the flux of events the shapes and behavior of organisms.“
— George Kubler American art historian 1912 - 1996
p. 8 as cited in: Pamela M. Lee, " " Ultramoderne": Or, How George Kubler Stole the Time in Sixties Art. http://xenopraxis.net/readings/lee_ultramoderne.pdf" Grey Room (2001): 55.
„My first colour sequence was in what was then called ‘Geva Colour’ for the dream sequence in Nagin.“
— Vyjayanthimala Indian actress, politician & dancer 1936
„Biotech companies spread patented genetic sequences via the natural ecosystem—much like a computer virus. Then they use the legal system to claim ownership of any organism their patented genetic sequences invade. They are raiding communal seed banks, obtaining patents for naturally occurring apples, sugar beets, corn, and a host of other plants and animals. They have immorally seized control of the food system and stand poised to claim ownership of life itself unless we take action.“
— Daniel Suarez American writer 1964
Chapter 9: Seed Police
„The purpose of a classiﬁcation scheme is to arrange information, in documents on shelves or on cards in indexes, in a sequence that will be helpful to the user.“
— Douglas John Foskett 1918 - 2004
p. 93; As cited in: Mei Hong (2006, p. 44)
„Individual societies begin in harmonious adaptation to the environment and, like individuals, quickly get trapped into nonadaptive, artificial, repetitive sequences.
When the individual's behavior and consciousness get hooked to a routine sequence of external actions, he is a dead robot, and it is time for him to die and be reborn. Time to "drop out," "turn on," and "tune in."“
— Timothy Leary American psychologist 1920 - 1996
Context: Individual societies begin in harmonious adaptation to the environment and, like individuals, quickly get trapped into nonadaptive, artificial, repetitive sequences. When the individual's behavior and consciousness get hooked to a routine sequence of external actions, he is a dead robot, and it is time for him to die and be reborn. Time to "drop out," "turn on," and "tune in." This period of robotization is called the Kali Yuga, the Age of Strife and Empire... The Purpose of Life is Religious Discovery
„System designers who do not allow users to type far ahead ought to be tarred and feathered, or worse yet, be forced to use their own system.“
— Andrew S. Tanenbaum Dutch computer scientist 1944
Operating Systems Design and Implementation, 3rd ed., p. 310.
„The Social System School: Closely related to the human behavior school and often confused or intertwined with it is one which might be labeled the social system school. This includes those researchers who look upon management as a social system, that is, a system of cultural interrelationships. Sometimes, as in the case of March and Simon, the system is limited to formal organizations, using the term "organization" as equivalent to enterprise, rather than the authority-activity concept used most often in management. In other cases, the approach is not to distinguish the formal organization, but rather to encompass any kind of system of human relationships.“
— Harold Koontz 1909 - 1984
„Conventional "requirements" …are systems of prescriptions and proscriptions intended solely to limit the physical and intellectual movements of students — to "keep them in line, in sequence, in order," etc.“
— Neil Postman American writer and academic 1931 - 2003
Context: Conventional "requirements" …are systems of prescriptions and proscriptions intended solely to limit the physical and intellectual movements of students — to "keep them in line, in sequence, in order," etc. They shift focus of attention from the learner (check [Goodwin] Watson again) to the "course." In the process, "requirements" violate virtually everything we know about learning because they comprise the matrix of an elaborate system of punishment, that in turn, comprise a threatening atmosphere in which positive learning cannot occur. The "requirements," indeed, force the teacher — and administrator — into the role of an authoritarian functionary whose primary task becomes that of enforcing the requirements rather than helping the learner to learn. The whole authority of the system is contingent upon the "requirements."
„Refactoring is a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior. Its heart is a series of small behavior preserving transformations. Each transformation (called a 'refactoring') does little, but a sequence of transformations can produce a significant restructuring. Since each refactoring is small, it's less likely to go wrong. The system is also kept fully working after each small refactoring, reducing the chances that a system can get seriously broken during the restructuring.“
— Martin Fowler British programmer 1963
Martin Fowler at refactoring.com as cited in: Lawrence Bernstein, C. M. Yuhas (2005) Trustworthy Systems Through Quantitative Software Engineering. p. 266
„If it weren't for President Obama we might not have done the intelligence community assessment that we did that set up a whole sequence of event which are still unfolding today, including Special Counsel Mueller's investigation. President Obama is responsible for that. It was he who tasked us to do that intelligence community assessment in the first place.“
— James Clapper US government official 1941
„Written history may, in the course of its narrative, use some of the laws established by the various sciences, but its own task remains that of relating the essential sequence of historical action and, qua history, to tell what happened, not why.“
— Lloyd deMause American thinker 1931
Ch. 2, The Independence of Psychohistory, p. 85.
„I'd just like to interject for a moment. What you’re referring to as Linux, is in fact, GNU/Linux, or as I’ve recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux”, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine’s resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called “Linux” distributions are really distributions of GNU/Linux.“
— Richard Stallman American software freedom activist, short story writer and computer programmer, founder of the GNU project 1953
Internet meme commonly attributed to Stallman made by an unknown source.