Well, it happens from time to time. Some scientist pokes his head above the parapet and characterises some traditional knowledge as credulous, bogus beliefs, witchcraft or some such. This time it’s dowsing, although it might be homeopathy, astrology, poltergeists, the paranormal, near death experiences, telepathy, precognition, knowledge of a previous life, etc etc.
The pattern is always the same. The scientific materialistic paradigm of scientism lives by the dogma that everything is material and everything will ultimately be explained in objective terms by science. Of course, this is just as much a bogus belief as any of these other systems. Sadly it seems to be espoused by much of the UK’s mainstream media.
If the guy really wants to know about dowsing he should research it, get some rods or a pendulum and try it out, give it a chance. He might get a big surprise. Water companies are commercial organisations and are likely to be seeking the most cost effective way of finding water, leaks etc. If this is dowsing, so be it.
I’m not trying to denigrate science itself, which is a wonderful way of understanding aspects of the world and developing technologies which enhance our lives. It is the closed mind of materialism, and the denial of possible alternative explanations and approaches to the world, that actually contradict the very spirit of science.
Dismissing things because of your own credulous beliefs is not science.
See also earlier posts Materialism, The Master and His Emissary, Battle of Ideas.