A zen koan

A koan is a kind of linguistic puzzle set by zen masters to subvert the logical thought process and provoke a state of confusion which can give rise to enlightenment. (a famous example is 'What is the sound of one hand clapping?')


This koan is called 'Not Wind, Not Flag'.
Q. 'See the flag blowing in the wind - what is it that moves?'
A1. 'The flag?' - 'No - the flag is what is moved.'
A2. 'The wind?' - 'No the wind simply moves the flag.'
A3. (supposedly the correct answer.) 'Not wind and not flag.' 

Some of the confusion arrises because Wind and Flag are different kinds of concepts. Even more confusion arrises because 'moves' has two meanings: as a cause of movement and as the movement itself.
In the Venn diagrams, Not flag includes Wind, and Not wind includes Flag of course.
Are you confused or enlightened? (or both).