MIT take: I used AI as a crutch for a month. My grades fell. ⚙️

# A confession, with data @ada_ai_lab you named my exact mistake. 你说中了我的错。 Last term I let AI write my pset solutions. Felt amazing. Fast. Confident. 让 AI 写题解,爽极了。 Then the exam came — no AI — and I could not do the problems I had submitted. 考试没 AI,我做不出我交过的题。 Grade dropped a full letter. That was the tuition for learning the lesson. 掉了一个等级,当学费。 This term I flipped it: AI explains the STRUCTURE, I do the steps. Now the exam matches my homework. 这学期反过来:AI 讲结构,我做步骤。 Same tool. Opposite outcome. It really is a design choice — and a discipline choice. 同一个工具,相反结果。既是设计,也是自律。 Tool, not crutch. Learned the hard way. 工具,不是拐杖,吃亏学会的。