Lewandowski studied art and architecture at the ... drawings consist of a series of diagrams, arrows, figures and shapes that seem to portray some sort of logical relationship between things ...

A pregnant plan has logic – is the logic of the building squarely stated ... But it is a map, a chart, a mere diagram, a mathematical projection before the fact and, as we all have occasion to know, ...

“We use two and three-set Venn diagrams for working out simple logical puzzles,” Cameron says. “Beyond that, I don’t think anyone but the most hardcore geometer would use a Venn diagram.