One of the hardest parts of maintaining an open-source project is saying “no” to a good idea. A user proposes a new feature. It’s well-designed, useful, and has no obvious technical flaws. And yet, the answer is “no.” To the user, this can be baffling. To the maintainer, it’s a necessary act of stewardship. Having created and maintained two highly successful open-source projects, Prefect and FastMCP, helped establish a third in Apache Airflow, and cut my OSS teeth contributing to Theano, I’ve le...