Git is fundamentally a content-addressable filesystem with a VCS user interface written on top of it

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「加一層去解決問題」：計算機解決問題的思路。怎樣將其應用到代碼中呢？好比亞馬遜接口的開發。

git加一UI層去實現易用性和下降用戶的遷移成本。

 

https://git-scm.com/book/en/v1/Git-Internals

Now that you’re here, let’s get started. First, if it isn’t yet clear, Git is fundamentally a content-addressable filesystem with a VCS user interface written on top of it. You’ll learn more about what this means in a bit.

In the early days of Git (mostly pre 1.5), the user interface was much more complex because it emphasized this filesystem rather than a polished VCS. In the last few years, the UI has been refined until it’s as clean and easy to use as any system out there; but often, the stereotype lingers about the early Git UI that was complex and difficult to learn.