Laws of UX · Speed and effort
Fitts's Law
The time to acquire a target is a function of the distance to and size of the target.
The design-system take
Where the principle shows up in a token, component or pattern decision.
Bigger, closer targets are faster to hit: primary actions get large hit areas, destructive actions get distance and confirmation. A 16px icon in a corner is a targeting exercise.
Adapted from Fitts's Law on Laws of UX — Jon Yablonski.