Gene N.

The rigorous approach is exactly right. Always have blind listening tests - give your recordings to people who don't know what location they're from or what you think they say.

Not helicopters, not drones, genuinely no sound whatsoever. Mate, I hate to be that person but... lanterns? Chinese lanterns are absolutely rife in Yorkshire and they're silent.

I will defend the humble dowsing rod to my last breath purely on the basis that it costs nothing, has been used for centuries, and produces results that are no less scientifically validated than a...