‘’rely on fossil fuels’’
i can only suggest that you take a few minutes to look around where you sit right now, and mentally remove all objects that do not have contained within them, an element of fossil fuels.
true — it may be possible in the future to construct ‘’stuff’’ by other means, but as of now, such means are in the realms of wish-science — ie as Kurzwell says above — -technologies that do not exist today, but which ‘’could’’ be developed in the future
at least he’s honest
In the meantime, do that exercise — remove everything as above — -you will be sitting naked on bare earth, starving to death.
Our reliance on fossil fuel really is that critical — not pessimistic — but realistic