**3.5 Self-execution nature and immutability**

The superior ability of smart legal contracts is their self-execution and immutability. Once the chain is activated, the performance of the contracts is automatic without human intervention, and the records are immutable and permanent. This means that the coded terms cannot be changed once the smart contract has been entered into the distributed ledger on the blockchain platform. The implication is that it would be difficult to amend a smart legal contract should an error is found during the process. The high-speed ability powered by the computer processing power means that an error in one block could propagate to many subsequent transactions causing widespread disruptions. Parties are required to get it right the first time to avoid undesirable possible disastrous consequences.
