I think TFP should have a constant upper bound due to physical limits, but maybe we’re unlikely to get anywhere near it in practice; I wouldn’t know.
Separately, capital and labour growth are limited by exploring and exploiting space at a cubic rate, bounded by the speed of light in all directions.
So, growth is bounded above by a cubic function, assuming our current understanding of physics.
Good point! Though I think it shouldn’t be difficult to figure out a lower upper bound, maybe an economist is working on that right now, depending on how actively researched this domain is.
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I think TFP should have a constant upper bound due to physical limits, but maybe we’re unlikely to get anywhere near it in practice; I wouldn’t know.
Separately, capital and labour growth are limited by exploring and exploiting space at a cubic rate, bounded by the speed of light in all directions.
So, growth is bounded above by a cubic function, assuming our current understanding of physics.
Good point! Though I think it shouldn’t be difficult to figure out a lower upper bound, maybe an economist is working on that right now, depending on how actively researched this domain is.