These things I believe.

Jono DiCarlo at Mozilla Labs documented his feelings about user interface design in a great post titled These Things I Believe.

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Is change good or bad?
Change has a cost. Change disrupts the user’s habits. Change forces the user to learn something new.
Sometimes the new UI is so much better than the old one that the change is worth the cost.
Sometimes it isn’t.
The trick is knowing when change is worth it.
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