Here is a possibly meaningless statistic. In looking through my Lightroom catalog, find that I statistically need eleven shots in the field for every shot I end up using in a finished project. That ratio can be a lot higher. I found many examples as high as 40:1, but it is a rare exception that results in a used image when there is only a single capture in the field. It seems that working a scene intensely is a better strategy for me than run and gun.