R.G. wrote:
Have you hit on something there, MtnMan? Is it better to have water flow from L to R? Do we have a natural tendency to percieve movement in that direction, because it's the way we read?
It is generally believed that the eyes of people who read left to right tend to enter a picture on the left and flow right. People often also state that the eye tends to move towards bright and colorful points in an image.
I don't know that these points have been proven and suspect they don't apply to everyone but they seems to work for me.