“Because a unicycle is not a static, stable perch like a chair, remaining balanced on it necessitates constantly adjusting the human-unicycle orientation in space and time. When a clown balances on a unicycle, he is always moving slightly this way and that in response to any perturbations that occur. There are always tiny factors that affect his balance and, instinctively, as he learns to ride the unicycle, the clown will automatically, slightly adjust his balance responses in order to remain the equilibrium.”