For one, there are certain classes of contract that can be enforced entirely on-chain. Specifically, those having to do with crypto-assets themselves and, possi

For one, there are certain classes of contract that can be enforced entirely on-chain. Specifically, those having to do with crypto-assets themselves and, possibly, any asset ownership represented by the crypto-tokens. For two, smart contracts are code, and as such have to be more formally specified than a traditional english-language contract. This has benefits and also drawbacks, but for certain applications it may be useful.