Interesting question by Smokey, I've sometimes wondered that myself, but I would agree with Relic nut, "Only as capable as the operator". To me it's more 25% machine, 25% skill, and 50% luck, after all, it still comes down to sweeping the coil over that one square inch of planet earth to find that great target. How many times have we gone to what we thought would be a great place to detect, with visions of silver coins dancing through our heads, only to come up pretty much empty handed, other times, out of shear boredom,, go to a parking strip or something, not expecting much, and find that "WOW" item. Sure, the machine, the operator, both DO factor in, but there are days I believe it's the amount of luck? that the Treasure God's are willing to bestow upon us. "Like my mama always said, "Life is like a box of chocolate's, you never know what your going to get" That's all I have to say about that. "Forrest Gump"