As we begin this מאמר about פורים, we want to understand the מדרש that tells us that אחשורוש not sleeping is a reference to Hashem not being able to sleep. The פריערדיקער רבי uses this to explain how this part of the פורים story is the apex of the miracle.Being that the world operates around the behavior of the אידן, when the אידן are drowsy in their fulfillment of תורה and מצות, it causes a drowsiness in the world - גלות.Why is גלות compared to sleep?The difference between how a person operates awake vs. asleep is not in their functionality. It is about the method of their functionality, it is about the hierarchy of the psyche. While a conscious decision is one where preference is given to logic, then emotions, then expression, dreams on the other hand are chaotic, because there is no hierarchy of operation.This is a precise description of גלות: chaos reigns, what should be important is not, and vice versa.