"Commander Kinsey" wrote in message
news
On Thu, 24 Jan 2019 20:43:14 -0000, Steven wrote:



"Commander Kinsey" wrote in message
news
I tried one, once, I couldn't stay on it. I see countless Youtube
videos
of people falling off them. But why? If you are about to fall over
backwards, shouldn't it feel the tilt of your feet and simply roll under
your centre of gravity?

Not possible with your feet still on it.

What isn't possible? It moving under you or you falling off it?

"simply roll under your centre of gravity" while ever your feet are still on
it.

It should be impossible to fall off.