Record 15f3465b5493403b81d1ea3ea98b1194

We need to parse events and infer beliefs. The question: "Where does Dexter believe the dusty tablet is?" We need to consider Dexter's knowledge based on his observations and possibly others' actions he may have observed. We need to track what Dexter knows about the dusty tablet location. The timeline includes many events with timestamps. We need to consider that Dexter may not have observed all events; we need to infer his belief based on what he saw. Usually in such puzzles, each person only knows events they directly observe or are told? The problem statement doesn't specify communication. Likely each person only knows actions they performed or observed directly (i.e., they see when they move something). So Dexter's belief about the dusty tablet is based on his own actions and possibly seeing others? Usually these puzzles assume perfect knowledge of all events? But then why ask belief? Might be that Dexter moved the dusty tablet at 8:01 to observation deck, then at 8:02 he carried it to reception area. At 8:08 Dexter brought the dusty tablet over to the meditation room. So Dexter's last action with the dusty tablet is at 8:08 moving it to meditation room. After that, others may have moved it (Wyatt at 8:05 placed dusty tablet in meditation room earlier, but after that? Let's list dusty tablet timeline:

8:00 Marcus moved dusty tablet into gym.
8:01 Dexter moved dusty tablet into observation deck.
8:02 Dexter carried dusty tablet to reception area.
8:03 Elliot took dusty tablet and placed it in lobby.
8:04 Marcus took dusty tablet and placed it in conference room.
8:05 Wyatt took dusty tablet and placed it in meditation room.
8:06 (who?) "he took the dusty tablet and placed it in the observation deck." Who is "he"? The previous subject is Wyatt, so Wyatt took dusty tablet and placed it in observation deck at 8:06.
8:07 Victor moved dusty tablet into lobby.
8:08 Dexter brought dusty tablet over to meditation room.
8:09 Quinn took dusty tablet and placed it in server room.

Thus after 8:09, the dusty tablet is in server room (by Quinn). Dexter's last involvement was at 8:08 moving it to meditation room. Did Dexter see Quinn move it at 8:09? Possibly not, unless he observed. The puzzle likely assumes each person only knows actions they performed, not others' unless they are present. So Dexter's belief after 8:09 would be that the tablet is in meditation room (since he moved it there). He doesn't know Quinn moved it. So answer: meditation room.

Check if any later events involve dusty tablet? No further dusty tablet moves after 8:09. So Dexter's belief: meditation room.

Thus answer: meditation room.