No only do I think you should sharpen (as others have mentioned) but I would just go out and get him a pair of the gloves so he has them. Probability of his getting them if you mention them is just about 0. Heck, maybe you could take it to 11 and clear a seat in the shop next time he motors by. Parkinson's is a b***h and anything to keep people with it active is time / effort well spent.
Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.
-Bill Watterson
Reminds me of my safari in Africa. Somebody forgot the corkscrew and for several days we had to live on nothing but food and water.
-W. C. Fields