XPost: alt.home.repair, alt.sci.physics, uk.d-i-y   
   From: shy543@gmail.com   
      
   "Commander Kinsey"  wrote in message   
   news:op.zv43lzx3wdg98l@desktop-ga2mpl8.lan...   
   > On Thu, 24 Jan 2019 20:43:14 -0000, Steven  wrote:   
   >   
   >>   
   >>   
   >> "Commander Kinsey"  wrote in message   
   >> news:op.zv40t1vfwdg98l@desktop-ga2mpl8.lan...   
   >>   
   >>> 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.   
   >>   
      
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