The original message was simple. It contained twelve words and a date, and it was written on a sheet of bond paper in the handwriting of a man named Klaus Weber, an intelligence analyst who had been stationed in West Berlin during the autumn of 1962, and the message read: the facility on sixty-seventh street is a behavioural observation centre and the subjects include dr harrington s project is active and i have the documentation and the date was october thirteenth.

The message was intended for a newspaper editor in New York. Klaus Weber had typed it on a typewriter in his apartment in the western sector, had placed it in an envelope, had addressed it, and had stamped it, and he had then walked it to the mailbox on the corner of Kantstrasse because he was a man who believed in the power of printed words to expose truth, having spent his career in intelligence analysis understanding the difference between what was known and what was published, and understanding that publication was the only mechanism by which knowledge could become accountability.

The first handoff was between Klaus Weber and a courier named Hans Mueller, a man who walked messages from the western sector to the american correspondents on Potsdamer Strasse every Tuesday and Thursday, and Hans took the envelope from Klaus on a Monday evening in a coffee shop near the checkpoint, and Hans read the address on the envelope and nodded and put it in his coat pocket and said he would deliver it personally and Klaus said thank you and the transaction was complete, but Hans had not read the message, and the message, in Klaus's handwriting, was already slightly ambiguous: the facility on sixty-seventh street could be interpreted as a medical facility or a research facility or a detention facility, and behavioural observation centre could mean a centre that observes behaviour or a centre that teaches behaviour, and the subjects could be academic subjects or human subjects, and dr harrington s project could be anything from a medical trial to a psychological study to a military programme, and the documentation could be photographs or handwritten notes or printed reports or nothing at all, and the phrase i have the documentation was the most degraded element of all, because it could mean i possess the documentation, or i am the documentation, or i have been instructed to document, or i have been documented, and by the time Hans reached the checkpoint, the message in his mind had shifted from an accusation to a report to a vague concern to a piece of paper that he needed to deliver but was not sure he understood, and he delivered it anyway.

The second handoff was between Hans Mueller and a journalist named Patricia Caldwell, who collected tips from couriers in the western sector and verified them through independent sources before publishing, and Patricia took the envelope from Hans on a Wednesday morning at a desk in the correspondents bureau, and she read the contents, and what she read was a confusing message that contained specific names and dates but vague accusations, and she filed it in her drawer because she needed to verify dr harrington and sixty-seventh street and the behavioural observation centre before she could use it, and she filed it with a dozen other tips that she had not yet verified, and the message sat in the drawer for three weeks, during which time Patricia's memory of its contents degraded further: the facility became a centre, the behavioural observation became monitoring, dr harrington became a doctor, and the documentation became evidence, and evidence is a stronger word than documentation and carries implications that documentation does not, and Patricia wrote a short article about a possible monitoring programme at a residential facility on sixty-seventh street, but she did not name dr harrington because she had forgotten the name and could not verify the address because the building had been renovated and the directory had changed, and the article was published in the weekend edition, and it was read by three people, and one of them was a man who worked for dr harrington.

The third handoff was between the published article and a government liaison named Friedrich Bauer, who read the article in the weekend edition and recognized the description of the facility and understood that the article was pointing in the direction of a programme that his agency had funded and approved and monitored and considered classified, and Friedrich took the article home and filed it in a folder labelled domestic activities and wrote a memo on the inside of the folder that read: possible exposure of harrington programme, initiate monitoring of source, and the memo degraded the original message further: the behavioural observation centre became a residential monitoring programme, the subjects became residents, the documentation became the article, and the phrase i have the documentation became someone knows something, and someone knows something is not the same thing as someone knows something specific and can prove it, and Friedrich sent the folder to his superior.

The fourth handoff was between Friedrich Bauer and his superior, a woman named Edeltraud Vogel, who reviewed the folder and understood that the harrington programme was real and was being monitored by a government that had approved its existence and was now uncomfortable with its exposure, and Edeltraud wrote a new memo that read: harrington programme confirmed. Media article contains partial information. No action required at this time. Programme continues. And the memo degraded the message because partial information became confirmed, and confirmed was a word that implied the programme existed and was real and was worth mentioning at all, and the phrase no action required became no action required on the programme, and the programme continued, and the folder was filed.

The fifth handoff was between Edeltraud Vogel and an archivist named Gottfried Schulz, who catalogued the folder in the agency records system and entered the metadata that would determine how the folder could be found or not found in the future, and Gottfried entered the subject tags as: harrington, residential facility, media coverage, behavioural study, and the tags degraded the message because behavioural study is not the same as behavioural observation centre, and residential facility is not the same as sixty-seventh street, and media coverage is not the same as a document that describes a testing ground, and the tags were the only indices by which the folder could be found, and the original twelve words were now searchable only through tags that had been selected by a man who had never read the original message and was selecting tags for a folder whose contents he had skimmed and understood at a level that was sufficient for his purposes, which were not to preserve truth but to archive it in a form that could be retrieved by someone who knew which tags to search.

The sixth and final handoff was between the archive and a researcher named Anna Kessler, who visited the agency records office twenty years later and searched for information about behavioural studies in berlin during the cold war, and who found the harrington folder through the tag behavioural study, and who read the contents and understood what she read to be a confirmation that a residential monitoring programme had existed in berlin during the sixties, and she wrote a thesis about it, and the thesis described the programme as a cold war intelligence exercise in residential surveillance, and the thesis was published by a university press, and the thesis described the subjects as residents, the facility as a residential building, the documentation as media reports, and dr harrington as a programme director whose name appeared in archival memos, and the thesis cited the original twelve-word message exactly once, in a footnote, and even in the footnote, the message had degraded from i have the documentation into the phrase referenced documentation, and the date october thirteenth had become a reference number, and the facility on sixty-seventh street had become a location described in secondary sources, and the behavioural observation centre had become residential surveillance, and the programme had become an exercise, and the exercise had become history, and history had become a thesis, and the thesis had become a book, and the book was sitting on a shelf in a library in east berlin, and the twelve words that had started as a man's attempt to expose a system were now four paragraphs in a scholarly work that described the system as a historical artefact, and the system that had been described in those twelve words was still running, in a different building, with different subjects, under a different name, and nobody who had read the book knew that.