He kept a written log of his life broken up into five minute intervals. He claimed his diary was complete, that every minute over the course of 20 years was carefully accounted for by thousands of words a day, a task that the interviewer characterized as having taken over his life. Buckminster Fuller’s Dymaxion Chronofile, the only similar effort I’m aware of, broke up the day into comparatively slipshod 15 minute chunks. I suppose you have to limit the temporal specificity of your log to avoid falling in to an recursive loop of logging one’s logging…

Reminds me of a very short story by Jorge Luis Borges: On Exactitude in Science.