On Expression There was a germ of something there. And it’s the same thing that causes people to want to be poets instead of bankers. I think that’s a wonderful thing, and I think that same spirit can be put into products, and those products can be manufactured and given to people and they can sense that spirit. If you talk to people that use the Macintosh, they love it. I mean you don’t hear people loving products very often. But you could feel it, there was something really wonderful there. So I don’t think that most of the really best people that I’ve worked with have worked with computers for the sake of working with computers. They work with computers because they are the medium that is best capable of transmitting some feeling that you have that you want to share with other people. And before they invented these things, all these people would have done other things. But computers were invented, and they did come along, and all these people did get interested in them, either in school or before school, and said “Hey, this is the medium that I think I can say something in." Steve Jobs, Steve Jobs: The Lost Interview connectionexpression
Constrained by the medium The inevitable reciprocation that occurs between the act of drawing and the thinking associated with it. The hand moves, the mind becomes engaged, and vice versa. We might ask: How much does the medium of expression actually constrain a design process? A medium has a way of constraining our choices, and this influence may not involve conscious choice at all. The planner, in the end, sees and understands only those things for which they can provide expression. Peter G. Rowe, Design Thinking Michaelangelo's hammer constraintsexpressionmedia
Idiolect A Definition en.wikipedia.org Idiolect is an individual's unique use of language, including speech. This unique usage encompasses vocabulary, grammar, and pronunciation. An idiolect is the variety of language unique to an individual. This differs from a dialect, a common set of linguistic characteristics shared among a group of people. Things you didn't know you can be bad at languagepersonalityidentityexpressionspeech
This used to be our playground An Essay by Simon Collison colly.com There was a time when owning digital space seemed thrilling, and our personal sites motivated us to express ourselves. There are signs of a resurgence, but too few wish to make their digital house a home. A shifting house next to a river of knowledge wwwexpressionidentityblogging
What's Wrong With This Model? A Chapter from The Design of Design by Frederick P. Brooks, Jr. What's wrong with the rational modelDeciding what to designEvaluating goodnessChanging constraintsThey just don't work that way+1 More
What's wrong with the rational model We Don’t Really Know the Goal When We Start We Usually Don’t Know the Decision Tree – We Discover It as We Go The Nodes Are Really Not Design Decisions, but Tentative Complete Designs The Goodness Function Cannot be Evaluated Incrementally The Desiderata and Their Weightings Keep Changing The Constraints Keep Changing Changing constraintsDeciding what to designThe situation talks back
Deciding what to design We Don’t Really Know the Goal When We Start The most serious model shortcoming is that the designer often has a vague, incompletely specified goal, or primary objective. In such cases, the hardest part of design is deciding what to design. I came to realize that the most useful service I was performing for my client was helping him decide what he really wanted. Today, we recognize that rapid prototyping is an essential tool for formulating precise requirements. Not only is the design process iterative; the design-goal-setting process is itself iterative. Knowing complete product requirements up front is a quite rare exception, not the norm. Therefore, goal iteration must be considered an inherent part of the design process. What's wrong with the rational model iteration
Evaluating goodness The Goodness Function Cannot be Evaluated Incrementally The Rational Model assumes that design involves a search of the decision tree, and that at every node, one can evaluate the goodness function of several downward branches. In fact, one cannot in general do this without exploring all the downward branches to all their leaves, which is possible in principle, but leads to a combinatorial explosion of alternatives in practice. What's wrong with the rational model
Changing constraints The Constraints Keep Changing The explicit listing of known constraints in the design program helps here. The designer can periodically scan the list, asking, “Can this constraint now be removed because the world has changed? Can it be entirely circumvented by working outside the design space?” What's wrong with the rational model constraints
They just don't work that way Perhaps the most devastating critique of the Rational Model, although perhaps the hardest to prove, is that most experienced designers just don’t work that way. “Conventional wisdom about problem-solving seems often to be contradicted by the behavior of expert designers. Empirical studies of design activity have frequently found ‘intuitive’ features of design ability to be the most effective and relevant to the intrinsic nature of design. Some aspects of design theory, however, have tried to develop counter-intuitive models and prescriptions for design behavior.” — Nigel Cross
We must outgrow it Why all this fuss about the process model? Does the model we and others use to think about our design process really affect our designing itself? I believe it does. I believe our inadequate model and following it slavishly lead to fat, cumbersome, over-features products and also to schedule, budget, and performance disasters. The Rational Model, in any of its forms, leads us to demand up-front statements of design requirements. It leads us to believe that such can be formulated. It leads us to make contracts with one another on the basis of enshrined ignorance. A more realistic process model would make design work more efficient, obviating many arguments with clients and much rework. The Waterfall Model is wrong and harmful; we must outgrow it.