My AI wrote a bug, then fixed it itself — the self-healing moment

Writing the async crawler until 1 AM, everything timed out when I ran it. I opened the code to hunt for bugs, only to find Cursor had already fixed it, leaving a comment above—"Added retry and timeout control here, take a look and see if it's right."

💡 What You Will Learn

Writing the async crawler until 1 AM, everything timed out when I ran it. I opened the code to hunt for bugs, only to find Cursor had already fixed it, leaving a comment above—"Added retry and timeout

Here's what happened.

I was scraping an API with rate limiting, and I'd written three layers of async functions. First run? A screen full of asyncio.TimeoutError.

I was about to dive into the code to debug when I noticed a blue modification marker on the file tab in my editor—I hadn't touched it?

I clicked it open, and it turned out that in the 2 minutes I was away getting water, Cursor Agent had analyzed the error logs on its own, found the problem (missing timeout parameter, no handling of the 429 rate-limit responses), and directly modified three spots in the code.

After the changes, it even added a comment:

This function will automatically wait and retry on 429, with the timeout set to twice the request timeout. If it still doesn't work, you can increase it.

My first reaction wasn't "great, that saved me time"—it was "oh no, I'm losing my edge."

I reviewed every line it changed—it was better than what I'd have written. More thorough exception handling, a more elegant retry strategy. I deleted its comment but kept the code changes.

Later, I talked to a friend about this. He said isn't this just the natural evolution of Copilot? Before, AI only autocompleted; now it diagnoses, decides, and executes.

I told him I'm not afraid of being replaced. What I'm afraid of is—next time I hit the same problem, will I just wait for AI to fix it instead of thinking it through myself?

That's the most subtle path of skill degradation in programming: it's not that you no longer know how—it's that you no longer need to know how.