Copilot Is Not a Magic Pill: Why Some Developers Double Their Productivity with AI While Others Get Slower

GitHub Copilot, Cursor, and Claude Code each have different positioning. But even with the right tool, your productivity might still drop—the key isn’t the tool, it’s whether you have the judgment to wield it. This article analyzes real scenarios for AI-assisted development, common problems, and what kind of people can truly use these tools well.

Copilot 不是萬靈丹:為什麼有人用 AI 寫程式效率翻倍,有人卻越用越慢?

GitHub Copilot、Cursor、Claude Code 各有定位。但工具選對了,效率還是可能變差——關鍵不在工具,在於你有沒有「判斷力」來駕馭它。這篇文章分析 AI 輔助開發的真實場景、常見問題,以及什麼樣的人能真正用好這些工具。