Reading up on some pseudoscientific ideas common among dowsing-rod enthusiasts, I happened upon a funny detail. Many Swedish dowsers believe in the “Curry grid”, consisting of “power lines” across the surface of the Earth, detectable only by dowsing. They were invented (not discovered, as they are entirely fictitious, and never survive blind tests) by German physician Manfred Curry (1899-1953). As it turns out, Curry was far more known during his lifetime as a keen sailor and student of sailboat design, inventor of the cam cleat (Sw. fjÃ¤drande skotlÃ¥s) and contributor to the invention of the Genoa jib (Sw. genuafock). Both of these latter were common and very useful features of the two-sail dinghies I used to sail in my lower teens.