That even if you see diminishing returns to what you can accomplish with greater intelligence, a small advantage will still compound into a large one over the theoretically infinite lifespan of an AI.
Infinite? Why isn't AI subject to the heat death of the universe?
Really,Asimov is more on point and more fun to read than all these Superintenlligence pundits
I miss him I only started to read his book after his death. RIP Good doctor
"Unhappily, Zee Prime began collecting interstellar hydrogen out of which to build a small star of his own. If the stars must someday die, at least some could yet be built."
My point being, there's plenty of time before coming heat death starts to cause problems :).