Read what the Boston Globe had to say about McCain’s non-ability to do certain things, among them use a keyboard:

McCain gets emotional at the mention of military families needing food stamps or veterans lacking health care. The outrage comes from inside: McCain’s severe war injuries prevent him from combing his hair, typing on a keyboard, or tying his shoes. Friends marvel at McCain’s encyclopedic knowledge of sports. He’s an avid fan - Ted Williams is his hero - but he can’t raise his arm above his shoulder to throw a baseball.

After Vietnam, McCain had Ann Lawrence, a physical therapist, help him regain flexibility in his leg, which had been frozen in an extended position by a shattered knee. It was the only way he could hope to resume his career as a Navy flier, but Lawrence said the treatment, taken twice a week for six months, was excruciatingly painful.

”He endured it, he wouldn’t settle for less,” said Lawrence, who rejoiced with McCain when he passed the Navy physical. ”I have never seen such toughness and resolve.”

He still manages to communicate.