Whatever happened to SHA-256 support in Git? [LWN.net]

Whatever happened to SHA-256 support in Git?

Posted Jul 6, 2022 15:21 UTC (Wed) by excors (subscriber, #95769)
In reply to: Whatever happened to SHA-256 support in Git? by farnz
Parent article: Whatever happened to SHA-256 support in Git?

> in a blockchain, consensus is formed automatically and does not depend on humans choosing trusted people

...except when, say, the core developers can't agree on a technical change for the project and so they fork the blockchain and now you've got two versions that both claim to be authoritative, and they have to fight it out on social media to convince users/miners/exchanges/etc to support their side. Maybe the mathematical model is trustless but that's because it's modeling an unrealistically abstract version of the problem - the practical implementation is never trustless, it's just obscuring who you're having to trust. (And as demonstrated over and over again, users often end up having to trust people who really don't deserve that trust.)

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Whatever happened to SHA-256 support in Git?

Posted Jul 6, 2022 15:46 UTC (Wed) by farnz (subscriber, #17727) [Link]

To be fair, that's an issue because you're choosing between two different blockchains, each of which does the trust thing automatically.

And that sort of problem is what I meant by saying that it's mathematically neat, but not necessarily practical - being able to form a consensus without trust is cool, but there are other dimensions involved beyond simply forming a consensus, such as which blockchain to trust.