Well, capital accumulation does raise productivity, so traditional pro-growth policies are not useless. But they are not enough, as you argue.
Ultimately, we need either technologies that directly raise productivity (like atomically precise manufacturing, fusion energy or other cheap energy source) or technologies that accelerate R&D and commercial adoption. Apart from AI and increasing global population, I can think of four:
boosting average intelligence via genetic engineering
reforming science and engineering, as well as education (a la dath ilan)
nootropics, BCIs, and other electrochemical methods of tinkering with the brain
systematic experimentation with social technology (having easy ways of testing ideas like open borders, UBI, Georgism, prediction markets and adopting those that work)
Well, capital accumulation does raise productivity, so traditional pro-growth policies are not useless. But they are not enough, as you argue.
Ultimately, we need either technologies that directly raise productivity (like atomically precise manufacturing, fusion energy or other cheap energy source) or technologies that accelerate R&D and commercial adoption. Apart from AI and increasing global population, I can think of four:
boosting average intelligence via genetic engineering
reforming science and engineering, as well as education (a la dath ilan)
nootropics, BCIs, and other electrochemical methods of tinkering with the brain
systematic experimentation with social technology (having easy ways of testing ideas like open borders, UBI, Georgism, prediction markets and adopting those that work)