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> I don't think anyone has claimed Go's type system has novel features.

The third phrase of the linked essay is:

> Go type system is not a traditional type system

"non-traditional" is generally read as "novel" in some way.

You're mistaken here. "non-traditional" doesn't mean "novel", it just means "something that isn't traditional". For example, eating cereal for dinner is non-traditional, but that doesn't mean no one has done it before.

That's a bit of a stretch... If someone made a language that directly copied Haskell's type system, I'd 100% call it a non-traditional type system, but there would be nothing novel about it.

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