Reading this thread, it seems to me that this is another case of computers being better than humans at remembering details, especially details about rarely used procedures.

When you revdel the first revision of a page, some of the page content and/or edit comment are still visible in the logs. For example, I hid the content and edit comment of this page with revdel, but the edit comment is still visible to the public in my page creation log. It would be nice if the software would warn you about this, similar to how when you delete a page, it prompts you that you might also want to delete the associated talk page.