Robert Morris College

CI-620 System Analysis and Design

Topics

Instructor: Ed Quigley 724.774.2088


Topics 3/05/98: Design

Administrivia and Opening Comments: Discussion of:
Clement Mok, Designing Business, Chapter 1.

Herb Simon, Sciences of the Artificial, Chapters 1 and 6.
satisficing

We live in a designed world.
Requirements tell what happens, Design tells how it is made to happen.
Artifacts are the things we design and make.

The first artifacts amplified brute human/animal power: the lever, the pulley, the inclined plane, the screw, the wheel-and-axle.
Renaissance artifacts were the clock and the printing press.
Industrial Rev. artifacts harnessed inanimate power (coal, oil, water) to control simple machines
The newest artifacts control complex systems that humans cannot.

If we could rid ourselves of all pride, if, to define our species, we kept strictly to what the historic and pre-historic periods show us to be the constant characteristic of man and of intelligence, we should not say homo sapiens but homo faber. In short, intelligence considered in what seems to be its original feature, is the faculty of manufacturing artificial objects, especially tools for making tools.
Henri Bergson, Creative Evolution

Bergson's notion of homo faber conflicts with those who see man as a user of symbols


Notes from: Introduction to HTML,
Dr. Robert J. Skovira, RMC

Elegance is the perception of a graceful presentation of information: where and how text/images are used. Text font size consistency, image size and use, styles of the headers and footers all contribute to a sense of elegance. Simplicity is a way of being elegant.

Clarity is the perception of sensibility and reasonableness in communicative style. Information is expressed in a straight-forward manner. Using white space, formattting standards, integrating text and appropriate images, and placing navigational aids support clarity.

Harmony is the perception of how things look in a holistic manner. This ought to be subtle. Content (text and images) need to be balanced. Balance means physical symmetry on the screen.

Integrity is the perception that the information is complete, and contributes to the style of the presentation.


Notes from: Designing Visual Interfaces

Just as in nature systems of order govern the growth and structure of animate and inanimate matter, so human acitivity itself has, since the earliest times, been disntinguished by the quest for order.
Josef Muller-Brockman, The Graphic Designer and His Design Problems

To design is to plan,to order, to relate, and to control. In short, it opposes all means of disorder and error.
Emil Ruder, Typography

To Design is much more than simply to assemble, to order, or even to edit; it is to add value and meaning, to illuminate, to simplify, to clarify, to modify, to dignify, to dramatize, to persuade, and perhaps even to amuse.
Paul Rand, Design, Form, and Chaos

What is simple should be treated simply, What is difficult should be reduced to the simplest terms
Josef Muller-Brockman, The Graphic Designer and His Design Problems

Art vs Design

Art is valued for its originality and expressiveness.
Design is valued for its fitness to a particular user and task.

Whereas art strives to express fundamental ideas and perspectives on the human condition, design is concerned with finding the representation best suited to the communication of some specific information.

Elegence:

Maximum Meaning, Minimum Means. Abram Games.

In anything at all, perfection is finally attained not when there is no longer anything to add, but when there is no longer anything to take away.
Antoine de Saint Expury

Let's say the mission is to destroy up an enemy command center.

Elegance in design is seen in the immediately obvious success of a novel approach that solves a problem completely yet in a highly economical way. Example: Road signs are an excellent example of several design issues: they must communicate complex, life-critical messages in a single unambiguous symbol. The audience will be speeding past the sign in a high-distraction environment. (See Assignment.) Semiotics is the study of symbols.


Whitespace

Some space must be narrow so that other space may be wide, and some space must be emptied so that other space may be filled.
Robert Bringhurst,The Elements of Typographic Style

Problem Description as Design Process

To describe the problem is part of the solution. This implies not to make creative decisions as prompted by feeling but by intellectual criteria. The more exact and complete these criteria are, the more creative the work becomes.
Karl Gerstner, Designing Programmes


Notes from: The Design of Everyday Things

Nature of Human Action: Execution and Evaluation

bad mapping

good mapping
    DOET's Seven Principles
  1. use both knowledge in the world and knowledge in the head.
  2. simplify the structure of tasks
  3. make things visible; bridge the guls of execution and evaluation
  4. get the mappings right
  5. exploit the power of constraints, both natural and artificial
  6. design for error
  7. when all else fails, standardize!

Information is in the world and in design
?Is the Design Task Novel or Routine?
?Is the Design Client the User?

User-Centered Techniques

Focus on the Users of the system, what tasks they must perform, what resources they bring to the system, what resources they have to draw on. Thrust of User-Centered Techniques is that the designed system supports the user and the work the user needs to do, rather than producing a system that the user must work-around and accomodate in order to accomplish the work.

Another main point is a re-iterative technique of design, testing, improvement, and retesting. This is a design fountain as opposed to a design waterfall.


Walk-Throughs and Usability Testing

Discussion of PIT-Sched Usability Testing

Handouts Distributed


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