Boxes show boundaries; arrows show relationships

Containers and arrows are easy to overuse. Before adding either, ask what it is saying.

Every arrow should read as a sentence:

• A causes B
• A comes before B
• A depends on B
• A sends information to B
• B feeds back to A

Use a solid line for a stable relationship, a dotted line for a hypothesis, and a two-way arrow only for genuine mutual influence.

Draw five boxes and connect them with five different relationships. Write one verb beside each arrow.