Who is doing the arithmetic on your absence?

Name them. Not a room — names.

You will get three, and all three are accurate.
Colette remembers the hundred exactly.
There is no comfort available in pretending otherwise, so do not go looking for it there.

Take the comfort out and ask the real question:
which of the three has said one word about what it means?

None. The meaning is not in the room. You carried it in,
in the same pocket as the fob, and it was the only heavy thing you brought through the entrance.

The Book of the Fallen — Arrival 63:6