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- The original labels of some interface elements-for example, such as the "device list" view-were , were unclear to users. We reconsidered the names of these elements, trying to improve their information scent. The new names we chose, such as "sorted device list" view, proved easier for users in later testing rounds to understand.
- While we had originally thought of power sales as an action belonging to the "grid" (now "pricing") tab, most users of the paper prototype looked for this feature under the "storage" (now "reserves") tab. We added a "sell power" button under the "storage" tab to increase the flexibility and learnability of the application.
- Many users were initially confused about what each graph represented. This emphasized the importance of having clearer labels for graph data, which we focused on including in our final implementation.
- Similarly, users either ignored the data snippets in each top tab, or were confused about what they represented. We added the word "currently" to each tab, which drew more attention to the snippets and clarified their meaning.
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