Well. I couldn't wait, so I did a mini test. I got my son to put a ring in one of 5 brown paper lunch bags, each also containing dirt from the same ground as they were placed on, and he laid them out 8 feet apart two different times, and I found the correct one both times. It was getting late and the evening dew was settling on the grass, so we stopped. We used 5 bags just to same some time testing. When the L=rods crossed over the bag, I went into the house where he was, and I did not let him tell me, and I never opened the selected bag, and I did not disclose my choice to him at that time, I just wrote the bag line up sequence down on a piece of paper, and had him go outside and shuffle up the order, did it again, and then reveal my chioces to him and both were right. I know this is not a full test as suggested, and it isn't double blind, and twice may not be enough yet to prove anything, but the L-rods crossed, that was my decission factor, not "well I'll pick this one".(But I am pleased with the results and smiling abouit it) Now if his brain is telling my brain the hidden ring bag line up sequence and my body was twitching ever so slightly that I can NOT feel it and thats making the rods cross, which I hold pointed tip down one inch and they have drilled plastic handles, and all this is happening by thought waves, well , that TOO, is a pretty hard thing to believe. Ok that'll be it for awhile, I will look into the challange and post progress towards taking it. Thanks again for the info ya'll.