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  • Tammy LaBiche-Henley thinks this is interesting:

The principle of continuity is similar to closure: when looking at objects, our eyes seek the smoothest path and naturally create continuity in what we see even where it may not explicitly exist. By way of example, in Figure 3.9, if I take the objects (1) and pull them apart, most people will expect to see what is shown next (2), whereas it could as easily be what is shown after that (3).

From

Cover of Storytelling with Data: A Data Visualization Guide for Business Professionals

Note

Continuity - eyes seek smoothest path where it may not exist