Answer
a. It would be impractical and inconvenient to use a mouse (or even a
stylus) on a smartphone. Furthermore, the reduced size of the display
screen requires that nonessential elements of the display be constrained to limited space. For this reason, scrollbars are often omitted. If present, scrollbars are shown as thin lines.
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b. A sliding touch on the display screen is a natural gesture to the way we think. We may move papers or other items by sliding them around on a desk. An argument can be made that this is more natural than the use of scrollbars on a desktop computer. While indeed the scrollbar moves as expected, the area being scrolled moves in the opposite direction. For a user who has never used a computer, this behavior may seem counterintuitive.
Work Step by Step
a. It would be impractical and inconvenient to use a mouse (or even a
stylus) on a smartphone. Furthermore, the reduced size of the display
screen requires that nonessential elements of the display be constrained to limited space. For this reason, scrollbars are often omitted. If present, scrollbars are shown as thin lines.
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b. A sliding touch on the display screen is a natural gesture to the way we think. We may move papers or other items by sliding them around on a desk. An argument can be made that this is more natural than the use of scrollbars on a desktop computer. While indeed the scrollbar moves as expected, the area being scrolled moves in the opposite direction. For a user who has never used a computer, this behavior may seem counterintuitive.
