question: My son 41 yrs old has always had spastic cerebral palsy and only has good use of one eye and one arm and hand.  He has never walked, however, has good speech and good mind (all be it there are gray areas). He has no uncontrolled movements.  His sister made him think his \"life expectancy\" was short.  I have always understood this not to be true except in severe cases.  Please help me with an answer so I can reassure him.  Thank you