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ychujo2

It's not a bad thing. It's good for users. But give credit to the leaders in the field. If you make an iPod clone, you call it an iPod clone, not a clone of the Zume HD.

Chainer started it, was around years earlier, and it still has more users. So Google is not copying PyTorch, it's copying Chainer.

I think you mean Google is following the leadership of Chainer, like Facebook already does? PyTorch started as a Chainer fork. Its dynamic graph internals are all from Chainer.