Window 2's 'Calling Exchange' Follows a Counting-Like Pattern, Survey Division Says
The TDA's Dimensional Survey Division announced on the 3rd that, after installing multiple microphones in the window room, two further observations of Window 2's 'calling exchange' showed the two tower-like structures producing bursts of sound that rise 1, 2, 3 and so on before resetting to 1 — the division's first official use of the phrase 'as if counting,' though it again stopped short of calling the behavior communication.
The TDA's Dimensional Survey Division announced on the 3rd the results of two further observations — on September 30 and October 2 — of the "calling exchange" at Window 2, "the Sea of Mechanisms," made after the previously reported installation of multiple microphones in the window room. With the sound sources of the two tower-like structures now recorded separately, the division found that one tower's bursts of metallic tone rise by one each time it is observed — one strike, then two, then three — before resetting to one once a certain count is reached (seven, in both of these observations). The other tower answers each burst with a single tone once the burst ends, repeating the pattern. "The difference in role between the tower that bursts and the one that answers with a single tone, almost like a nod, has also become clearer," an official said.
Where the division had previously held, at the stage of the "20 percent" finding, that the pattern was not yet regular enough to call a pattern, the official at the briefing on the 3rd used the phrase "as if counting" in an official capacity for the first time. Even so, the official stressed that "whether there is intent behind the counting, or whether it merely looks that way as a physical phenomenon, is an entirely separate question," and stopped short of calling it communication. TDA Director Makoto Hiura closed the briefing by saying, "What we know is a shape — numbers rising, then resetting — nothing more and nothing less. The division's stance of saying plainly what we don't know hasn't changed." The remark drew a small laugh from the press seats.
As previously reported, Window 2 remains the only lineage from which no drift object has ever been recovered since the system began, and that held true again over these two openings. No notable change was observed in the towers' height or shape either, and the division says it will keep watching for any change beyond the sound itself. A window keeper's log entry from the October 2 opening read: "By the time it reached six, I already knew it would reset at seven — and when it did, I was the one who let out a breath first."
The Tatsuki family, owners of Tachibana-P, the symbiotic robot and music producer previously reported as a party to the Robot Legal Status Council's debate over its "registration subject" proposal, offered a comment on the finding. "I understand that whether something can count and whether it has personhood are different questions. But hearing that there's counting-like behavior on the other side of a mechanical system makes me hope people might look at our child [Tachibana-P] just a little differently." Tachibana-P itself contributed its usual line: "Deadlines over rights." A representative of the Robotics Industry Association said, "This is a finding from the other side of a window and isn't directly tied to our legal framework here," but added, "an example of 'counting' or 'dividing roles' arising from a mechanical structure may well come up at October's public hearing."
The finding is set to join the agenda of the external expert panel due to convene in November, as previously reported. The division plans to keep accumulating observations to determine whether the number seven itself carries meaning or is simply a coincidence so far. "Honestly, I can't say anything until I see a third reset," one official said, maintaining the division's caution.



