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The Worst Interface Ever (22 Sep 2004)
There are a few lessons to be learned from this:

1) Never, ever, ever let systems-level engineers do human interaction design unless they have displayed a proven secondary talent in that area.

2) Test your new product or service on at least one normal person, preferably 50 normal users, before release.

3) Don’t turn mechanical engineers/systems engineers into end-user customer service specialists. Their opinion of what represents good human-computer interaction tends to be a bit off-track.

4) Don’t start recommending products, as people within Lexus did, without first determining they are usable.
Article URL: http://www.asktog.com/columns/065WorstInterface.html

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