B2.22

Logical Constraints

Cards in this group · 3

  1. B2.22.1Logical constraints arise from reasoning relationships among elements, as when the one remaining part must fit the one remaining place
  2. B2.22.2Logical constraints require every related element to be visible; hiding any one defeats the inference
  3. B2.22.3Natural mapping often supplies a logical constraint as a side effect, making the two hard to separate in design