Suppose the world economy experiences zero growth over the next thousand years. The current world GDP is 9.6e+13 USD. The cost of a Big Mac, rounding to the nearest power of 10, is $10. In the no-growth scenario, the world GDP will be 9.6e+12 Big Macs. Currently 55% of the market is betting that there will be an economic contraction from current Big Mac levels. That seems crazy!

@Nick332 Why? Over a millenium a lot of possible economic contraction causing Black Swan events are likely to occur. Pandemics, nuclear war, climate change consequences, asteroids and so on. If a sufficiently large contraction were to occur, we have a lot less easily exploitable energy (in the form of fossil fuels) available to bootstrap a new highly complex society. If you ignore the past 200 years of exploiting fossil fuels, economic growth has been mostly stagnant across millennia.

I don't think that betting on the low order of magnitude options is crazy at all.

Assuming that Big Macs in the year 3000 will be assembled directly by some sort of nano-fabrication or something, and that only matter and energy will be an issue, and basically assuming that the question becomes whether you can use 1/10^18 of the matter and energy in the solar system to make a Big Mac: If my calculations are right, the sun outputs about 10^28 times the chemical energy in a Big Mac in a year, and the current biosphere only has enough mass for about 10^15 Big Macs but the Earth has enough mass for about 10^25 Big Macs (and some other planets are bigger, but I'm not sure if using their mass would still count as the GDP of Earth), so I think the only remaining issue is the mix of elements. If my calculations are right, the sun outputs about 10^18 times the mass-energy of a Big Mac in a year, so that's probably enough to get whatever elements are needed from existing elements through nuclear fission/fusion transmutation? I'm not sure though. Sorry this comment is a mess, maybe it's still better than nothing as a start for thinking about the answer.