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Gestalt: similarity 0:33
A 33-second explainer of Gestalt: similarity, narrated over the same demo you can try yourself.
Try the interactive Gestalt: similarity demo
What this video covers
The Gestalt law of similarity tells us we mentally group items that share visual traits - like colour, shape, or size - and perceive them as belonging together, even when spaced apart. Similarity alone suggests they form a set.
As a uniform grid it was just dots; tint every other column and you suddenly saw columns, groups, structure - without a single line or box being drawn. Your eye did the grouping on its own, purely from likeness. That's similarity doing your information design for free.
