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  • Brandt Ryan thinks this is interesting:

That’s it. Those three things. An interactive graphic is sort of like theater. During a play, actors enter the stage, they act, and they exit. In a data visualization, shapes, or more broadly, graphical elements enter the page, they update, and they exit.

From

Cover of Visual Storytelling with D3: An Introduction to Data Visualization in JavaScript™

Note

best analogy yet for enter, update, exit