The logic of shutters

This morning, I was fascinated by the concept of shutters.  I came to the conclusion that:

Shutters:Windows::Eyebrows:Faces

Shutters were once useful to houses, protecting the windows and keep the house warmer.  As houses and windows evolved, there was no longer a need to close the shutters when the winds and storms came.  However, people still put plastic shutters on the sides of their windows for decoration.  Quite frankly, they look a little funny since they're quite useless, yet it looks a little funny without them too.  Just like eyebrows.  That's my thought of the day.