Interruptions are tracked cursor placements of when a user may not have been completely finished with their train of thought before navigating away from the current editor.
As soon as a thot's text content is meaningfully changed (not just a space that will disappear when the cursor is placed elsewhere), the editor begins tracking the cursor as a possible interruption. The possible interruption continues being tracked while text content is removed or added. Once the user lifts the cursor (moves the cursor somewhere without typing) the possible interruption is no longer tracked. Additionally, if the user explicitly presses "Done" the possible interruption is no longer tracked. If however, the user navigates out of the current editor, either by opening another editor or by closing the current one, then any tracked possible interruption is registered as an actual interruption and can be revisited through the Interruptions venture.
When the interruptions venture is active, pressing the puck will reinstate the interrupted cursor placement allowing the user to revisit their train of thought. When revisiting an interruption, the user may realize that they weren't completely done writing about something and pick up where they left off. Additionally, if the user realizes that they had nothing left they wanted to write about where they were interrupted, they may swipe the puck down to untrack the interruption.