Filecoin’s critics point to the challenges of decentralized storage to say that “NFTs are no more permanent than any other part of the web.” But this oversimplifies the project, by insisting data be “permanent.” Of course, nothing is truly “permanent”; every system comes with its own set of tail risks and disclaimers. If we truly want to protect against even the 0.01% chance that any single system fails, we want to take a more comprehensive, layered approach.