A demonstration of D3's general update pattern shows a changing bowl of fruit, where apples are removed, replaced by lemons, or eaten over time. The visualization displays each fruit as a circle with a label, using ordinal scales for color and radius to distinguish types. The code applies incremental updates to SVG groups via D3's selection merge and exit methods, orchestrating changes with `setTimeout` calls to trigger sequential state changes. The example is built with D3 v6 and renders to SVG.