Amplify’d from www.npr.org
Try this: Put a blindfold on someone, take them to a park or a beach or a meadow and ask them to walk for as long as they can in a straight line. Then watch what happens:
Credit: Benjamin Arthur, Robert Krulwich
So why, when blindfolded, can't we walk straight? There is still no good answer. Jan Souman, a research scientist in Germany, co-wrote a paper last year about this human tendency to walk in circles.
Like Asa Schaeffer in our animation, he blindfolded his subjects (if you can call what he did to them "blindfolding;" it's more like head wrapping) and told them to try to walk straight for up to an hour.
They did this in the Sahara Desert. They did it on a beach. As usual, the blindfolded subjects could not keep to a straight line.
See this Amp at http://amplify.com/u/gxft
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