The Experiment that proves nothing !

I was going through this article which was arguing that the less you know the less confused you are while making decisions and that an overexposure to choice is what hinders decision making.
Some excerpts....
The less you know, the more wisely you seem to choose. HELEN JOYCE rummages through the mental toolbox you use when the facts are scarce
We also have rules of thumb for taking decisions, and Gigerenzer's paradox is that knowing a bit is sometimes better than knowing a lot. He describes an experiment in which American and German students had to pick the larger of pairs of American cities: San Diego or San Antonio? Detroit or Milwaukee? Many Americans got the answers wrong, but almost none of the Germans did. They correctly named the first of each pair, even though many of them had never even heard of Milwaukee or San Antonio. That ignorance was informative: the city they had heard of was probably the bigger one

I don't think this experiment proves anything !!!
It is a well known fact that there is nothing average/good about an average American Geography IQ. Even a Martian would score better at the test !

Study: Geography Greek to young Americans
WASHINGTON (CNN) -- After more than three years of combat and nearly 2,400 U.S. military deaths in Iraq, nearly two-thirds of Americans aged 18 to 24 still cannot find Iraq on a map, a study released Tuesday showed.
The study found that less than six months after Hurricane Katrina devastated New Orleans and the Gulf Coast, 33 percent could not point out Louisiana on a U.S. map.