Fitts’s Law: Why the Easy Button Wins
Large, close targets are faster to hit than small, distant ones, that’s Fitts’s Law. A look at the 1954 rule behind buttons, prime and magic pixels, thumb zones, and dark patterns.
Jo Iijima
A personal portfolio presenting Jo Iijima’s graphic design, motion, and typographic work—featuring experimental identities, print projects, animated pieces, and case studies that blend Japanese and English visual vocabularies.
News & Articles
Chunking: How to Design for a Brain That Can Only Hold Four Things
Your working memory holds about four things, not seven. Chunking groups loose information into meaningful units that slip past that limit, the psychology behind phone numbers, scannable pages, multi-step forms, and grouped navigation.
The Call to Action, Revisited
The Call to Action hasn’t changed in a decade, but the bar has. A fresh look at prominence, copy, mobile tap targets, and accessibility, with lessons from three major design systems.
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