Arguments for usability engineering
In product development:
- Timetable efficiency. For example UI design and evaluation done in correct time - not too early, not too late
- Part of product risk management (“usability risks”). For example new technology first time in the product
- Part of product quality (quality of use).
After product launch:
- Business benefits = sales, competition
- Buying again: “My next phone will also be a Nokia because this was so easy to use”.
In all phases: Learning to make it better - continuous learning