I have no idea how comprehensive it is, but it includes every page turn, word lookup, highlight, note, book open, book close, sleep, wake, wifi status, and failed connections attempted despite airplane mode. kindles have been doing the last more and more frequently lately. Some of these update several files as well as getting written to logs. The logs are periodically gzip'd and a new version opened.
This forum isn't flooded with such messages, but it is not rare for someone to post that deleted books reappear after a reboot, new books disappear after a reboot, setting changes don't stick, etc. These are all symtoms of a worn out flash memory mounted readony. When other possibilities are eliminated, flash wearout is the most likely explanation.
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