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  • Tammy LaBiche-Henley thinks this is interesting:

The closure concept says that people like things to be simple and to fit in the constructs that are already in our heads. Because of this, people tend to perceive a set of individual elements as a single, recognizable shape when they can—when parts of a whole are missing, our eyes fill in the gap. For example, the elements in Figure 3.7 will tend to be perceived as a circle first and only after that as individual elements.

From

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

Note

Closure - concept where people fill in things that are missing. Closures are clutter like borders and take away from data