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Fitts's law 0:29
A 29-second explainer of Fitts's law, narrated over the same demo you can try yourself.
Try the interactive Fitts's law demo
What this video covers
The time to hit a target grows as the target gets smaller and as it sits further away. Big, close things are fast; small, distant things are slow.
That gap you just felt is Fitts's law. It's why the primary button is big and close, and the "delete account" link is small and tucked away in a corner.
