Boundary
This is an ordinary reasoning analogue, not a soil sensor or a real library event.
Complete source
Fictional library display code says Circle = shelf needs review and Square = review complete. The log shows Circle at10:00, future10:30 blank.
Invitation
Explain the current plan decision using the whole supplied code.
Next try
Choose a question for the next record that would distinguish planned from completed work.
Ordinary possible response
Circle tells the reader to review this shelf under this fictional plan; later completion is unknown.