My wife brought home an electronic piano for the New Year. I asked AI to write a command-line tool to control it, and I wanted AI to play the piano for fun. Because it needs to connect via Bluetooth, I implemented it in Objective-C. Later, I found that pure command-line operation couldn't maintain the hardware connection, so I changed it to an RPC service that the CLI connects to and calls. I then discovered that it was struggling with panics caused by multi-threading and memory management, which made me realize that the RPC service was also implemented in Objective-C. It seems AI also doesn't like memory management and multi-threading😅. PS: For more complex problems like this, Codex is reliable.