He sounds optimistic yet retains credibility. I was impressed. From his new book, Fantastic Voyage: Live Long Enough to Live Forever - he talks of nanotek red blood cells that let you stay under water for 4 hours and white blood cells that kill pathogens in seconds instead of hours.
Includes his excellent handling on the usual imbecilic issues such as overpopulation, etc. Should form the core of the ImmInst FAQ's.
Check it out: Link