[DesertRhino]

If it really works, then it should be easily proven by having the practioner walk over a few test surfaces,,including one or two control beds with nothing in them at all.
Of course, then we’ll be told it was a prepared course, and the rods can only discern natural situations, not the others or some such excuse. This is New Orleans crystal ball fortune telling for old geezers. This is ESP.

This sounds like global warming science. Absolutely no requirement to follow the scientific method. Add in a compete denial of physical science, and just say “it works”.

[21twelve]

I have seen the use of metal rods to locate metal and pvc pipes. My theory is they work the way a regular utility locator works - VLF fields in the earth are disrupted/concentrated along long metal features. And in soils with magnetic minerals, the natural alignment of the magnetic minerals is disrupted when putting in a trench - so even a pvc pipe can be detected. Or perhaps an old Roman wall. A magnetometer survey can also find old trenches when the soils have magnetic minerals.

I don't know why a wood stick would work though. And definitely talking to the stick is weird.