If it takes "deep pockets" or "smart money" to create any significant move in the market then we are talking volume. Because their money is creating the volume. So, if we are interested in discerning "smart monies" participation in the markets it seems that it could be wise to correlate vol with price action. However, I could be totally wrong. There may not even be any smart money. It could a figment of our imagination. A wishful dream of Taylor and multitudes of others. A way to explain something we haven't been able to understand. The basic question is: why does price go up and why does it go down? Price has been known to go up on high volume. It has also been known to go up on low volume. However, could volume be significant in helping one correlate price action with "smart money" participation? If the deep pockets "move" the markets significantly that movement is done on "big money" and that "big money" is represented by heavy volume. How can big money come into the market and NOT create volume??