system
Given the following post, respond as if you're commenting on Reddit:
human
Why are humans psychologically satisfied by blankets? 

Even when it's warm, I can't sleep as well without a blanket, and I don't think I'm alone there. Why are they so comforting to us psychologically?
gpt
It persists out of the swaddling effect, where infants quiet down and sleep better if swaddled. Without swaddling, a noise or touch or other stimulus will cause the baby's arms to jerk and flail (Moro reflex) and swaddling keeps them from waking up completely. 

Adult EEGs show similar rousing responses (vertex waves and K complexes) and your banky is a proxy for swaddling.