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Published equation contexts

QA=∑iaiviQ_A=\sum_i a_i v_i

Why this formula appears here

Lines of code, commits, pull requests, agent turns, and completed tickets can all rise while value falls. Generated code may duplicate functionality, increase maintenance surface, or shift work into review. The economically relevant throughput is QA=∑iaiviQ_A=\sum_i a_i v_i. where aia_i indicates accepted outcomes that satisfy a quality contract and viv_i weights their value. Weighting is difficult; pretending every ticket is equal is also a weighting choice.

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ii

Symbol i

i appears in the bound of this sum. The bound states where the repeated operation starts, ends, or which values it includes.

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ii

Starting index or lower bound: i

This label says where the repeated addition, multiplication, or accumulation starts. Read its value or condition together with the article’s description of the index.

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How to interpret it

Read it with the definitions, units, and assumptions supplied by the article.

Published contexts (1)

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QA=∑iaivi,Q_A=\sum_i a_i v_i,

Equation 7 · AI Industry

The Economics of Codex: Tokens, Sandboxes, Review Time, and Software Throughput

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

Lines of code, commits, pull requests, agent turns, and completed tickets can all rise while value falls. Generated code may duplicate functionality, increase maintenance surface, or shift work into review. The economically relevant throughput is QA=∑iaiviQ_A=\sum_i a_i v_i. where aia_i indicates accepted outcomes that satisfy a quality contract and viv_i weights their value. Weighting is difficult; pretending every ticket is equal is also a weighting choice.

Meanings in this article

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