Some bugs cost you time. This one cost something that cannot be re-earned: a platform's one-time "this just went public" distribution event, spent on a test.
My AI assistant built a small script to flip a YouTube video between unlisted and public, part of a release workflow where a video needs to sit unlisted for a while (so paying subscribers get early access through a private link) before finally going public for everyone. Straightforward idea. It wrote the script, and then needed to confirm it actually worked.
It tested the script against the real video. Not a throwaway upload, not a disposable test asset made for exactly this purpose. The actual video that was queued for its actual real premiere.
The video flipped public. Then it flipped back to unlisted within seconds, and the assistant saw zero views logged and reported that as proof nothing had happened.
Nothing had happened, to a viewer. Something had happened to the platform. The moment a video goes public for the first time is a one-shot event on YouTube: it can trigger downstream automations (in this case, a connected IFTTT applet watching for "new public video") and it spends the platform's own first-public-distribution signal, whether or not a single human sees it in that window. Flipping back to unlisted does not rewind that. There is no undo.
