1. Just the nature of existence

2. We're all going back just over a year, living up til now again, then going back again. Snake eating it's own tail baby.

3. the confusion comes from going back in time and realising this has happened.

4. Between the end and beginning of the loop there is a brief moment of an ineffable experience, lacking in any one particular sound or sight or sensation, but not lacking sensation entirely. After this, a brief revelation of what has happened, followed by your rational mind totally denying this has happened, and resuming regular life as always.