Fitts's Law

Fitts's Law describes how the difficulty of moving quickly to a target depends on the target's size and distance. Specifically, it states that smaller and farther targets take longer to reach accurately, while larger and closer ones are quicker and easier to select. This principle helps in designing user interfaces by emphasizing larger, closer buttons for easier access, ultimately improving efficiency and user experience. It reflects a fundamental relationship between speed, accuracy, and target characteristics in human movement and interaction.