Is that a feature, or a bug? When someone finds a bug in the smart contract which allows me to transfer the car title to you, or the DMV loses their keys, or $

Is that a feature, or a bug? When someone finds a bug in the smart contract which allows me to transfer the car title to you, or the DMV loses their keys, or $whatever happens and suddenly some 13-year-old elbonian hacker owns every car in California I think "restore from yesterday's backup" is a better solution than rewriting the immutable blockchain. And, anyway, blockchains can be altered, you just need a majority to agree. Look at eth.