Another omnidirectional treadmill has been making the rounds this week. This one from Disney looks very cool, with a creative mechanism for moving the feet around that has a lot of advantages.Unfortunately, the real issues with omnidirectional treadmills can't be solved by changing what happens at the feet, because the problem is all in your head. Specifically in your inner ear; your vestibular system. And this problem is unavoidable because it is rooted in the way we walk and ultimately in the ...