The article discusses an error message in Microsoft Outlook 365 that states a message cannot be saved because it no longer exists, but can only be discarded. The author explores the ontological implications of this message, questioning the nature of existence and non-existence in the context of digital messages. The message also mentions that the contents of the non-existent message can be copied, but only if the message has not been discarded. This leads to further philosophical questions about the relationship between existence, discard, and content.