The trap of representing a Venn diagram as a circle

• Venn diagram is a notation for overlap of [set Since there is no constraint that the boundary of a set be circular, drawing a round line is The bias of easy drawing. Drawing with round lines adds restrictions to the expression that did not originally exist.

Like the diagram of IKIGAI.

When C expands, point P, which is A and B, is a single point and retracts, so it may seem that it will contact A or B alone first, but this is a phenomenon that arises from the restriction that the boundary of the set is circular.

This is what happens when P is drawn with a wide area instead of a point. Which perception is more appropriate depends on the contrast, but it is bias to be biased toward one or the other.

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