I thought it was because of his shoulders.
Either way, its a stupid ad and a retraction ought to be issued if the Democrats had an ounce of decency.
I think someone on the FR forum yesterday just surmised that it was his injured shoulders that hindered him in a lot of activities. - However, a favorite torture technique of the North Vietnamese was to systematically break the fingers one by one and not set them, or pull out the fingernails one by one, and so typing learned in the high school typing class is no longer the favorite passtime of one who has endured this repeatedly over a five and a half year period. It hurts.