A-first · Two questions for the library · selected source

Eligibility: After Day 31 with the earlier object/reference vocabulary revisited. The exact account is held; selecting records and unknown-plan reasoning are familiar.

Complete original fictional account

Fictional library archive L has four cards. L1: named Moon, fixed gate-frame G, morning on archive date 6, beside the left post, thin lit appearance. L2: same named Moon and G, later on date 6, above the right post, thin lit appearance. L3: date 19, same named Moon, near-full lit appearance; position/reference not supplied. L4: date 20, a written question only; observation explicitly not attempted. Visitor Noor asks where the Moon was against G on date 6. Visitor Sam asks how its lit appearance differed between dates 6 and 19. No cards are photographs or current local forecasts.

Four questions

1. Which cards help Noor? Tell or show why.

2. Which cards help Sam? What changed in their notes?

3. What does L4 tell us? What does it not tell us?

4. Make a short useful answer for one visitor. Keep its source.

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