What is design?

  • difference between

    • Analysis (i.e study/observe)
    • investigation (i.e. inquire)
    • design (i.e. Synthesis)
  • design Vocabulary

    • Functonal requirement:
      • What the device has to do
    • Design Parameters:
      • what you can vary to meet the requirements
    • Constraints
      • restrictions
  • Design Stages

    • 1. Desgin involves a progression from the conceptual:
      • “should our power source be x or y”
    • 2. through an intermediate stage aka configuration
      • “should the x be b strong or a strong”
    • 3. to the final stage of filling in the numbers on the engineering drawings “detail design”
      • “shoudl these be xcm bolts or 2.8 do?”
  • Objective Functions

    • the overall goodness of the design
      • out come should be quantifiable
  • Double-Diamond model

Science vs Engineering

  • Science
    • looks at what is and asks why?
    • if the universe is in state X, what happens next?
      • (adapted from G.B. Shaw, Back to methuselah)
  • Engineering
    • dreams of what has never been, and asks “why not?”
    • if I want the univerese to be in state x, what must happen first
      • (Ross TenEyck)