The explosives detector, supposedly developed from a golf ball locator. My gob is totally smacked - how can so many people, so many countries, so many experts and the military all be fooled by such a device when it is obvious to even the dimmest of us, that the device could not possibly work?
I've developed a gadget which you sit in front of a TV, it bleeps when nags are being shown around the ring before the race. The bleep indicates which will be the winner. I'm selling them for £100K each in a sealed box which must never be opened. I don't guarantee it to be right everytime, but it works frequently enough to make it extremely profitable.