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- Users make estimates about their caloric intake, rather than calculating calories based on formulae, e.g. (quantity of apple consumed) x (calories in 1 apple). The data collected is less refined than in Design 3.
Design #3
Makes use of extended metaphor to increase learnability.
Stresses learnability over efficiency
- Cannot do everything from The Room page (which is like a "home" page; it's where the user lands upon logging in).
Stresses visual simplicity over visibility
- Hides some details in order to reduce clutter. In these cases, it's possible for the user to see these details by clicking or hovering the mouse.