[JerryG]

Personally, while I can see these types of aids can certainly be put to constructive use, as stated earlier, one must consider the source when it comes to interpretation. I was recently in a store and watched a fellow hitting balls into a screen and a sales person then telling him what he needed based on the numbers he had on his computer. The only thing I could see that he needed was lessons. He walked out with a new offset driver with a soft shaft.