Regarding the health issues. Been there. Done that. Parkinson's runs in the family and so does cancer. The PD seems tro skip a generation, but we'll never know that for sure because my grandmother committed suicide long before our immediate family began. My diet is fine. My B12 levels check out (tested). This is the possible antagonist: Solvents. I've been using them since I was a child. Repetative strain isn't there because I do so many different activities over the period of a day and seldom the same ones day after day. My keyboard at home is in a good, low position as I designed and built my work center to be just that way. That possibility of being dead in a few years is a real concern, so I'm working hard to find the funds for tests, etc. Doctors are too much "moneymakers" nowadays...

 

Gravity pushing is a real involved subject and these text editors don't favor equation editing, so I'll make a simple example. create a block, or perhaps a dodecahedron of window screens face to face. Place it in a kids' wagon and hit it from one side with a high pressure stream of water. The "Radio Flyer" will move in the direction of the stream, assuming it is tangent to the wheel axels.

 

More later.

 

Dr. C.