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  • prototyping
    • what is a prototype
      • human interactions
      • has major functions of new sytem
      • minor function in the new system might not be present
    • why are they used
      • its unknown what users want
      • can be used to train staff
      • poorly understood system wastes time and money
      • identify problems early
    • throw away
      • feedback is precise
      • is not part of the final system
      • hard work thrown away
    • evolutionary
      • pros
        • meets user requirements
        • speeds delivery
        • users engages with system
      • what is it
        • users give feedback
        • initial prototype shown
        • developer refines prototype
      • cons
        • hard to know when to stop


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