I was, like, amaze—I've been a research subject, and I had no idea.

我很惊讶——我一直是一个研究对象，但我不知道。

So the algorithm was run totally automatically without any hands-on involvement of the data scientists at Facebook. And that's because they wanted to keep these research subjects totally anonymous.

因此，该算法完全自动运行，无需 Facebook 数据科学家的任何实际参与。那是因为他们想让这些研究对象完全匿名。