This is the first of a series of short articles on Mac usability deficiencies. From Wikipedia, https://en.wikipedia.org/wiki/Point_and_click#Fitts.27s_Law:
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Fitts's Law
Fitts's law can be used to quantify the time required to perform a point-and-click action.where:
- is the average time taken to complete the movement.
- represents the start/stop time of the device and stands for the inherent speed of the device. These constants can be determined experimentally by fitting a straight line to measured data.
- is the distance from the starting point to the center of the target.
- is the width of the target measured along the axis of motion. can also be thought of as the allowed error tolerance in the final position, since the final point of the motion must fall within of the target's centre.
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Why is this important? Regardless of where a window is on the screen, OS X places the menu in the far upper left. Mousing to the menu is more time-consuming than if the menu were attached to the window itself, putting OS X at a disadvantage compared to other popular desktop operating systems, especially those with large screens.
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