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Equation 22 · Part 1 · Who Builds 2100? The Demographic Engine of Technological Evolution

Symbol g_S

gSg_S
gSg_S

What this part means

doing.

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gSg_S is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Where the article explains it

If it does materialize, the difference between the top-right and bottom-right boxes — whether population is also growing or is instead the IHME-scale decline — matters much less than in the human-bound cases, because a large enough gCg_C term dominates the sum in the numerator of the growth relation regardless of what gSg_S is doing.

The passage around this formula

…is also growing or is instead the IHME-scale decline — matters much less than in the human-bound cases, because a large enough gCg_C term dominates the sum in the numerator of the growth relation regardless of what gSg_S is doing. That is precisely Aghion, Jones, and Jones’s point about their own model: sufficiently complete automation of the idea-production function decouples the growth rate of ideas from the growth rate of the human population searching for them, which is the specific, named mechanism by…

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