[Animats]

> Once a contract is deployed on the blockchain, its source code is immutable.

Maybe. Some smart contracts have calls to other contracts that can be changed.[1] This turns out to have significant legal consequences.

[1] https://news.bloomberglaw.com/us-law-week/smart-contracts-ru...

[rcbdev]

Yes! When developing Smart Contracts this used to be a best practice, enabling us to fix security holes in worst case scenarios.