“During initial design of a system, a task list for the whole system is developed, and then tasks are assigned to a component: hardware, software or human based on a number of factors. The point being that access to the total system is always an advantage and why many times closed systems can deliver a superior user experience. Apple products offer prime examples of the advantage in design of having that control. The iPod has a unified user experience across components and it shows in the simplicity of the UI. Mobile developers aren’t so fortunate unless they’re also handset makers. However, the systems view is helpful in assessing what tasks are being handled by the hardware, software platform and then what’s left for the application do to on behalf of the human or vice-a-versa.”
Link: Usability v. Human Factors in Complex Mobile Systems (mobilejones.com)
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