Korva is a scroll of the internet’s best ideas.

Jakub Krehel, a design engineer at Interfere, uses the context menu to show what AI changed about animation. Anyone can animate an interface now, and an AI agent will do it in a few seconds. Animating the menu on open and on close sounds fine on paper. Over a year of daily use, it costs each person hours.

Deciding not to animate something takes understanding of why animation exists at all, which is a different skill from the ability to animate. Agents are excellent at execution and do not yet have that kind of judgment.

Figma has announced Figma Motion, animation native to the canvas, with an agent that generates keyframes from a text description. Atlassian's lead motion designer expects it to help people develop taste faster. Taste, knowing when movement helps and when it gets in the way, is something each designer still builds for themselves.

Why do fast interfaces feel so different?

In 1982, IBM researchers Walter Doherty and Ahrvind Thadani reported that productivity rose sharply when a computer responded in under 400 milliseconds. This became known as the Doherty threshold. Below it, users stay in a continuous flow with the machine instead of waiting on it.

How fast does something feel instant?

Robert Miller described response-time limits for computer interfaces in a 1968 paper. Usability researcher Jakob Nielsen later popularized the finding that a response within about 0.1 second feels instantaneous. At about one second, users notice the delay but keep their train of thought, and at about ten seconds they lose attention.

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