Our Eyes (and Brains) are Limited.

Note for the day.  Our eyes can only see a small amoutn of detail at once.  They actually scan the area around us, something called saccades, to create the visual field that we know and love in all its continuity.  When we get very drunk, these saccades slow down, and the visual world is not continuously detailed, or stitched together.  It is how we would really see it if our eyes didn't jump around to fill in the blanks.  Hence the blurriness.