Resolution:
## Figure 3.
A side-by-side comparison of an Euler diagram and a Venn diagram for the same hypothetical
sets. A) The Euler diagram shows only non-zero areas and can therefore be more graphically
accurate. B) The Venn diagram shows the non-existent area as an area with zero content.
Though this is not graphically accurate, it preserves the recognisability of a Venn
diagram.
Chen and Boutros |