Stephen Hawking (1942-2018) was a British scientist and cosmologist. The author of "A Brief History Of Time" (1989), he was best known for his theories on cosmology and quantum gravity. Hawking suffered from a neuro-muscular dystrophy that is related to amyotrophic lateral sclerosis, a condition that has progressed over the years and had left him almost completely paralysed.
References to Zappa
Dave Dondorf, Zappa's chief technician, jokes that the great nuclear theoretician of our time, Stephen Hawking "learned everything he knows from Todd Yvega"