Checking cars with dogs, however, is a slow process, whereas the wands take only a few seconds per vehicle. “Can you imagine dogs at all 400 checkpoints in Baghdad?” General Jabiri said. “The city would be a zoo.”
http://blogs.discovermagazine.com/badastronomy/2009/11/04/when-antiscience-kills-dowsing-edition/
Es menos rapido
Para explicar el lio este con Sarah Palin vean el video del enlace que pongo abajo. Es un segmento del programa "The Colbert Report", esta en ingles pero se entiende bastante bien.
http://www.sarahpalinisafuckingretard.com/