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User 3 likes the layout and relative simplicity of each page.  However, they disliked the technical terms such as "Mail Client", suggesting "client" should be replaced by "provider" or another more identifiable term, and the technical term be placed in parenthesis near by.  The buttons for the tutorials, while big and easy to see, did not immediately suggest to them that one was a heading and one was a link to another location.

Problems

Track State (Tog 15) - Users can't tell when they've reached the last slide on the tutorial (buttons grey out, but too subtle) - Minor - Add a progress bar or x/y text field.

Error Prevention (Nielson 7) - User double clicking on subcategory buttons causes tutorials to slide out and back in - Minor - Put a timer on the buttons

Other Problems?  Our testers were not the discerning type.

Reflection

Paper prototyping was a cool technique to learn, and was particularly useful for developing a better idea of an appropriate layout, design, and page hierarchy that made sense without wasting a huge amount of time on unsuccessful iterations. We also found the canned prototype to be incredibly useful once we had a narrower potential design space , as it escaped the issues users had with using their imaginations to explore the paper prototypes and gave us a better idea of the limitations we would face in implementation.

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