Design, usually considered in the context of the applied arts, engineering, architecture, and other such creative endeavors, is used both as a noun and a verb. As a verb, "to design" refers to the process of originating and developing a plan for a product, structure, or component. As a noun, "a design" is used for both the final (solution) plan (e.g. proposal, drawing, model, description) or the result of implementing that plan (e.g. object produced, result of the process). More recently, processes (in general) have also been treated as products of design, giving new meaning to the term "process design".
Designing normally requires a designer considering aesthetic, functional, and many other aspects of an object or process, which usually requires considerable research, thought, modeling, interactive adjustment, and re-design.

Philosophies and studies of design
A design philosophy is a guide to help make choices when designing. An example of a design philosophy is "dynamic change" to achieve the elegant or stylish look you need.

Philosophies for guiding design
A design approach is a general philosophy that may or may not include a guide for specific methods. Some are to guide the overall goal of the design. Other approaches are to guide the tendencies of the designer. A combination of approaches may be used if they don't conflict.
Some popular approaches include:

User centered design, which focuses on the needs, wants, and limitations of the end user of the designed artifact
Use-centered design, which focuses on how it will be used with less emphasis on the user than user-centered design
KISS principle, (Keep it Simple, Stupid), which strives to eliminate unnecessary complications
There is more than one way to do it (TMTOWTDI), a philosophy to allow multiple methods of doing the same thing
Murphy's Law (things will go wrong in any given situation, if you give them a chance) Approaches to design

Main article: Design methods Philosophies for methods of designing
In philosophy, the abstract noun "design" refers to a pattern with a purpose. Design is thus contrasted with purposelessness, randomness, or lack of complexity.
To study the purpose of designs, beyond individual goals (e.g. marketing, technology, education, entertainment, hobbies), is to question the controversial politics, morals, ethics and needs such as Maslow's hierarchy of needs. "Purpose" may also lead to existential questions such as religious morals and teleology. These philosophies for the "purpose of" designs are in contrast to philosophies for guiding design or methodology.
Often a designer (especially in commercial situations) is not in a position to define purpose. Whether a designer is, is not, or should be concerned with purpose or intended use beyond what they are expressly hired to influence, is debatable, depending on the situation. Not understanding or disinterest in the wider role of design in society might also be attributed to the commissioning agent or client, rather than the designer.

Philosophies for the purpose of designs
Design Education uses the study of design movements and their sociohistoric significance to teach progressive solutions to human problems. The sociohistoric significance of design encompasses every change and interaction between people and their environment. The use of design education in classrooms and institutions marks an active commitment to human conditions rather than passive intake of information for future regurgitation or commercialization. Studying design teaches us to better formulate the problem to which we seek a solution.

Design as a process
According to video game developer Dino Dini in a talk given at the 2005 Game Design and Technology Workshop held by Liverpool JM University, design underpins every form of creation from objects such as chairs to the way we plan and execute our lives. For this reason it is useful to seek out some common structure that can be applied to any kind of design, whether this be for video games, consumer products or one's own personal life.
For such an important concept, the question "What is Design?" appears to yield answers with limited usefulness. Dino Dini states that the design process can be defined as "The management of constraints". He identifies two kinds of constraint, negotiable and non-negotiable. The first step in the design process is the identification, classification and selection of constraints. The process of design then proceeds from here by manipulating design variables so as to satisfy the non-negotiable constraints and optimizing those which are negotiable. It is possible for a set of non-negotiable constraints to be in conflict resulting in a design with no solution; in this case the non-negotiable constraints must be revised. For example, take the design of a chair. A chair must support a certain weight to be useful, and this is a non-negotiable constraint. The cost of producing the chair might be another. The choice of materials and the aesthetic qualities of the chair might be negotiable.
Dino Dini theorizes that poor designs occur as a result of mismanaged constraints, something he claims can be seen in the way the video game industry makes "Must be Fun" a negotiable constraint where he believes it should be non-negotiable.
It should be noted that "the management of constraints" may not include the whole of what is involved in "constraint management" as defined in the context of a broader Theory of Constraints, depending on the scope of a design or a designer's position.
Redesign Something that is redesigned requires a different process than something that is designed for the first time. A redesign often includes an evaluation of the existent design and the findings of the redesign needs are often the ones that drive the redesign process.

Defining a design process
A design process may include a series of steps followed by designers. Depending on the product or service, some of these stages may be irrelevant, ignored in real-world situations in order to save time, reduce cost, or because they may be redundant in the situation.
Typical stages of the design process include:

Pre-production design

• Design brief - a statement of design goals
  Analysis - analysis of current design goals
  Research - investigating similar design solutions in the field or related topics
  Specification - specifying requirements of a design solution
  Problem solving - conceptualizing and documenting design solutions
  Presentation - presenting design solutions
  Design during production
  
  
  
  • Development - continuation and improvement of a designed solution
    Testing - in-situ testing a designed solution
    Post-production design feedback for future designs
    
    
    
    • Implementation - introducing the designed solution into the environment
      Evaluation and conclusion - summary of process and results, including constructive criticism and suggestions for future improvements
      Redesign - any or all stages in the design process repeated (with corrections made) at any time before, during, or after production. Typical steps
      The word "design" is often considered ambiguous depending on the application.
      
      Terminology
      Design is often viewed as a more rigorous form of art, or art with a clearly defined purpose. The distinction is usually made when someone other than the artist is defining the purpose. In graphic arts the distinction is often made between fine art and commercial art.
      In the realm of the arts, design is more relevant to the "applied" arts, such as architecture and product design. Design implies a conscious effort to create something that is both functional and aesthetically pleasing. For example, a graphic artist may design an advertisement poster. This person's job is to communicate the advertisement message (functional aspect) and to make it look good (aesthetically pleasing). The distinction between pure and applied arts is not completely clear, but one may consider Jackson Pollock's (often criticized as "splatter") paintings as an example of pure art. One may assume his art does not convey a message based on the obvious differences between an advertisement poster and the mere possibility of an abstract message of a Jackson Pollock painting. One may speculate that Pollock, when painting, worked more intuitively than would a graphic artist, when consciously designing a poster.
      
      Design and art
      Engineering is often viewed as a more rigorous form of design. Contrary views suggest that design is a component of engineering aside from production and other operations which utilize engineering. A neutral view may suggest that both design and engineering simply overlap, depending on the discipline of design. The American Heritage Dictionary defines design as: "To conceive or fashion in the mind; invent," and "To formulate a plan", and defines engineering as: "The application of scientific and mathematical principles to practical ends such as the design, manufacture, and operation of efficient and economical structures, machines, processes, and systems." . Both are forms of problem-solving with a defined distinction being the application of "scientific and mathematical principles". How much science is applied in a design is a question of what is considered "science". Along with the question of what is considered science, there is social science versus natural science. Scientists at Xerox PARC made the distinction of design versus engineering at "moving minds" versus "moving molecules".
      
      Design and engineering
      The relationship between design and production is one of planning and executing. In theory, the plan should anticipate and compensate for potential problems in the execution process. Design involves problem-solving and creativity. In contrast, production involves a routine or pre-planned process. A design may also be a mere plan that does not include a production or engineering process, although a working knowledge of such processes is usually expected of designers. In some cases, it may be unnecessary and/or impractical to expect a designer with a broad multidisciplinary knowledge required for such designs to also have a detailed knowledge of how to produce the product.
      Design and production are intertwined in many creative professional careers, meaning problem-solving is part of execution and the reverse. As the cost of rearrangement increases, the need for separating design from production increases as well. For example, a high-budget project, such as a skyscraper, requires separating (design) architecture from (production) construction. A Low-budget project, such as a locally printed office party invitation flyer, can be rearranged and printed dozens of times at the low cost of a few sheets of paper, a few drops of ink, and less than one hour's pay of a desktop publisher.
      This is not to say that production never involves problem-solving or creativity, nor design always involves creativity. Designs are rarely perfect and are sometimes repetitive. The imperfection of a design may task a production position (e.g. production artist, construction worker) with utilizing creativity or problem-solving skills to compensate for what was overlooked in the design process. Likewise, a design may be a simple repetition (copy) of a known preexisting solution, requiring minimal, if any, creativity or problem-solving skills from the designer.
      
      Design and production
      "Process design" (in contrast to "design process") refers to planning the routine steps of a process aside from the expected result. Processes (in general) are treated as a product of design, not the method of design. The term originated with the industrial designing of chemical processes. With the increasing complexities of the information age, consultants and executives have found the term useful to describe the design of business processes as well as manufacturing processes.
      
      Process design
      
      See also
      Commerce
      Applications
      Communications
      Scientific and mathematical
      Physical
      
      Business design
      New product development
      Packaging design
      Product design
      Service design
      Experience design
      Game design
      Interaction design
      Design of experiments
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      Architectural engineering
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      Cellular manufacturing
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      Design engineer
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      Co-Design
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      Design for X
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      Error-tolerant design
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      Functional design
      Mind mapping
      Open design
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      Reliable system design
      TRIZ
      Universal design
      User innovation Other design related topics