The Rational Model
The Rational Model was independently developed by Simon and Pahl and Beitz. It posits that:
- designers attempt to optimize a design candidate for known constraints and objectives,
- the design process is plan-driven,
- the design process is understood in terms of a discrete sequence of stages.
The Rational Model is based on a rationalist philosophy and underlies the Waterfall Model, Systems Development Life Cycle and much of the engineering design literature. According to the rationalist philosophy, design is informed by research and knowledge in a predictable and controlled manner. Technical rationality is at the center of the process.
Read more about this topic: Design, Design As A Process
Famous quotes containing the words rational and/or model:
“Every rational creature has all nature for his dowry and estate. It is his, if he will. He may divest himself of it; he may creep into a corner, and abdicate his kingdom, as most men do, but he is entitled to the world by his constitution.”
—Ralph Waldo Emerson (1803–1882)
“Research shows clearly that parents who have modeled nurturant, reassuring responses to infants’ fears and distress by soothing words and stroking gentleness have toddlers who already can stroke a crying child’s hair. Toddlers whose special adults model kindliness will even pick up a cookie dropped from a peer’s high chair and return it to the crying peer rather than eat it themselves!”
—Alice Sterling Honig (20th century)