Motion gets added to products for two very different reasons: to genuinely help someone understand what just happened, or to make a demo look impressive. Only the first reason produces motion that survives real daily use.
Motion Should Explain a Change, Not Decorate One
Every animation should answer a specific question: where did this element come from, or where is it going? A card that slides in from the direction its trigger was clicked helps users build a spatial model of the interface. Motion added purely for delight, without that explanatory function, tends to feel gratuitous on repeat use.
Duration Should Scale With Distance and Familiarity
A 300ms transition feels appropriate for a small element moving a short distance the first time a user sees it. The same duration feels sluggish for a power user who’s triggered that action a hundred times. We build in shorter durations for frequent, familiar interactions.
Respect Reduced-Motion Preferences by Default
Motion sensitivity is a real accessibility concern, not an edge case. Every interface we ship checks for the reduced-motion preference and provides an equivalent, motion-free experience automatically, rather than treating it as an optional add-on.
Easing Matters More Than Most Teams Realize
Linear motion reads as mechanical and cheap. Natural-feeling ease curves, calibrated to match how physical objects actually accelerate and decelerate, are what separate motion that feels premium from motion that feels like a checkbox someone ticked.
Consistency Beats Cleverness
A unique, delightful animation on one screen and completely different timing on the next makes a product feel disjointed. A shared motion language, applied consistently across the whole product, does more for perceived quality than any single standout animation.
Good motion design is mostly invisible. If someone notices the animation itself rather than what it communicated, it’s probably doing too much.
