Who moved the display cards?
1When Yuna opens the archive room, the display cards are no longer on the sorting table. They are arranged neatly in a drawer. She did not see anyone move them. Nevertheless, she feels certain that someone moved them after the previous session, so she says, 'Someone must have put the cards away.' Her words express a conclusion based on what she sees, not a report of an action she witnessed.
2Min suggests that Leo might have moved the cards. Leo was helping near the room yesterday, but several other volunteers were there too. Nothing in the available record identifies the person. Yuna agrees that Leo is one possibility; she does not replace the uncertain claim with a definite accusation.
3The group also considers Sara. A complete travel record shows that she was in another city throughout yesterday, and moving these paper cards required being in the room. On that basis, Yuna says, 'Sara cannot have moved them yesterday.' Before writing a summary, the group separates the location of the cards, the possible person, and the person ruled out by the stated evidence.