She didn't know she could, not having seen one during the week the skillware was in her glasses's software library. But the company that supplied Starbucks with barista-guiding software had military contracts for slightly different sorts of skill, and was not above their occasional misplacement. For the week that took them to find and fix the problem, her glasses would have recognized an armed nuclear bomb and overlaid instructions for its safe disposal, which she would have followed with the same confident speed with which she operated espresso machines and greeted by name customers she had never seen.
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