Click on the link for a fun video about why we turn in circles when blindfolded and told to walk straight. We still don't know!
They didn't mention testing blind people though, which is curious. The blind are known to strengthen their other senses, so they'd probably do better.
If we can see, so be it. If we can't, we train our other senses. So it's a conundrum why we'd study this at all. Still, the style of the video is worth watching.