"It seems probable that once the machine thinking method has started, it would not take long to outstrip our feeble powers. At some stage, therefore, we should have to expect the machines to take control."
AGI or ASI is inevitable. IMo, that's not the same thing as sentience however, and there's no reason to assume a highly intelligent tool would have any desires whatsoever.
We may develop a machine for recording information directly on the brain, as today we can record a symphony on tape.
Humph!
I included this concept in my speculation on how colonizing other planets might work, and everyone said it was less likely than being able to build a biosphere on a colony ship where people could survive for dozens of generations.