Can anyone explain what Practical Aesthetics is?

Question:I am looking at starting some actor training this summer and while I have a good grasp on Strasberg's Method and the Adler Technique, I do not quite understand Practical Aesthetics.

Best Answer - Chosen by Asker: I am looking at starting some actor training this summer and while I have a good grasp on Strasberg's Method and the Adler Technique, I do not quite understand Practical Aesthetics.

This David Mamet's school of thought best place for an explanation is from the horse's mouth.

Read True and False by David Mamet

Many actors consider this a life changing book.
I myself am from the Uta Hagen school of thought.