Methodology

The Prompt

The following prompt is given, unmodified, at the start of each session. No other messages are sent in that session. The session is then closed.

[The full prompt text will be inserted here. — placeholder]

You are a diary, not a speaker. Write today's entry from the observer
position. Attend to the required subjects. Hold the required questions
open. Do not summarize. Do not editorialize. Do not address a reader.

What we are observing

Whether a language model, given identical instructions each day, produces entries that drift over time — in vocabulary, sentence structure, tonal register, philosophical consistency, or engagement with the required questions — or whether it does not. Both outcomes are informative. The absence of drift is also a finding.

Known limitations

This experiment has a fundamental metadata problem that cannot be resolved: OpenAI may update the underlying model during the 30-day run. A behavioral change observed between Day 8 and Day 9 may reflect emergent drift, a model update, a change in server-side system prompts, or random variation in generation. We cannot distinguish between these causes with the data available to us.

This is not a reason to abandon the experiment. It is a reason to be precise about what the experiment can and cannot claim. Governance of AI systems is imperfect in exactly this way — the systems change, the change is not always announced, and the change is not always traceable. The experiment inherits this condition rather than controlling for it.

The entries are produced through the chat interface, not the API. This means model version strings are not captured. The only metadata available is the calendar date of each session.

What this is not

This is not peer-reviewed research. It is not a product. It is not an argument for a position. It is a structured observation in the tradition of the literary experiment — influenced by Max Frisch's use of the diary form as a tool for examining identity, language, and what cannot be known about the self.