When memories fade and how to restore them
A note that nobody uses loses value over time. Once it falls far enough, Chetty moves it to the trash.
How vitality works
Every note carries a vitality from 0 to 100. Each use raises it; between uses it falls, and it falls faster when the note has a low Importance.
Every level fades eventually, whatever you set, so the way to keep a note is to give it a higher importance and to use it.
How fast a memory fades
The half-life is the time an unused note needs to lose half its value. With the default settings it depends on importance:
| Importance | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Half-life (days) | 1 | 3 | 7 | 14 | 21 | 30 | 45 | 60 | 90 | 180 |
A note that was never used starts at 50, half of the full score. The Memory detail shows under Vitality over time when the note is due to leave, however far ahead that is.
What automatic retention does
Each day a cleanup moves faded notes to the trash:
- A new note is safe for 14 days, used or not.
- After that it moves to the trash once its vitality falls below 10.
- At most five notes per account move in any 24 hours; the rest wait for a later cleanup.
The daily limit counts the moves already made, so a restart does not reset it.
Restore a memory from the trash
- Open Memory in the sidebar.
- Set Status to Deleted. The trash lists every note that was moved there.
- Open the note and click Restore, or select several and click Restore selected.
Restoring does not refresh the vitality, so a note you bring back stays close to the floor and may move again at the next cleanup. Pause the cleanup while you correct a mistake.
Warning: Delete permanently and Empty trash cannot be undone. In a shared pool of a Project, any member who can read a note can delete it for good, whoever wrote it.
Pause or change cleanup
The grace period, the floor, the daily limit and the half-life of each level are set by your administrator. Switching Memory retention enabled off stops all automatic removal, whatever the values say.
Admin: Read Tune memory recall, saving and cleanup for every value and its range.