So does fortune telling and communication with the dead...until they attempt to perform under controlled, scientific conditions. Then (for some strange reason) the skill disappears.
And, dowsing is no different.
Below is a link to the Simthsonian Institution that contains of video of dowsers attempting to reproduce their skill under controlled conditions. And, they totally fail. Like fortune tellers and people that "talk to the dead," when push comes to shove, when facing an actual controlled test, their skill disappears.
http://blogs.smithsonianmag.com/science/2009/02/debunking-dowsing/
You mistake me for a credulous enthusiast. I am not. I’ve seen some strange things-not limited to dowsing, either-that I generally ascribe to either chicanery or the devil and his angels. I wouldn’t pursue any of it.