Shouldn&#x27;t, not can&#x27;t. You still can have components keep their own state, and that may be the right decision for small&#x2F;localized&#x2F;ephemeral state, such as what&#x27;s selected in a dropbox, or the coordinates of a widget that&#x27;s being dragged around. But it&#x27;s more common to have views trigger events&#x2F;send actions, which then update the top-level state and trigger a re-render.