Als More Condition_symptoms How Has Stephen Hawking Managed To Live So Long With ALS?

How has Stephen Hawking managed to live so long with ALS? - als more condition_symptoms

Stephen Hawking can not speak, walk or eat, but succeeded, in spite of ALS (Lou Gehrig's) disease, survive for decades. How is this possible? Can someone uses with ALS using mechanisms that Hawking to keep track of your life? Or any other disease? Most people with ALS die within 2 years.