A thought occurs for sleep: normally to successfully fall asleep it helps to put yourself in a very predictable and boring state (lying motionless in the dark with your eyes closed), with no major sense input to attend to, threats to deal with, or necessary tasks to complete.
If everything is low certainty, maybe that leaves the brain unable to settle, because it can’t reach high confidence in the hypothesis that it’s safe to fall asleep.
A thought occurs for sleep: normally to successfully fall asleep it helps to put yourself in a very predictable and boring state (lying motionless in the dark with your eyes closed), with no major sense input to attend to, threats to deal with, or necessary tasks to complete.
If everything is low certainty, maybe that leaves the brain unable to settle, because it can’t reach high confidence in the hypothesis that it’s safe to fall asleep.