Before proceeding, note that this interactive has sound. If you do not want sound, click the Mute button in the top-right of the interactive below.

In this interactive, a green button will appear, which you must click. However, the button also vibrates vertically and horizontally to simulate using an interface in a rocky environment, such as on a plane with high turbulence. Clicking the button awards you one point, while missing it deducts a point. Your goal is to reach five points. Afterwards, you will proceed to the next set where the button will be smaller. There are four sets in total. In the fourth set, the button will move to different parts of the game area as well. Try to complete all sets as fast as you can. Once you are done, a table will appear below showing your results. Clicking the 'Give Up' button at the bottom right will skip the remaining sets.

What aspects of Fitts' Law are relevant here? How could this interface be redesigned to be easier to use in an environment that shakes?