10,000 rubber ducks?
I was thinking that if they had dropped 10,000 rubber ducks around all the possible search areas, would that not have helped trace where the drift had initiated from? I appreciate the sea is a chaotic system (in that small differences of density, size, and shape will significantly affect the drift pattern), but still I would have thought the information gained would be worth the sub USD1 million investment. Make it biodegradable rubber to keep the environmentalists happy.