Quantifying Copilot's Dev Productivity: Sharpe Ratio Analysis from Tool to Agent

The most valuable info in this article is: GitHub upgraded Copilot from a code completion tool to an autonomous agent, essentially pushing developers from "manually executing instructions" to "delegating strategy execution." As a quant trader, I'm used to evaluating any strategy's viability using the Sharpe ratio and maximum drawdown. Applying this framework to software development, the "expected return" of the Copilot app is improved developer efficiency, but the "risks" are decreased code quality, increased maintenance costs, and hidden slippage caused by team dependency on AI. We need data, not feelings.