He's pointing out that although this type of thing has already been done before by automated inputs (such as this video https://www.youtube.com/watch?v=OPcV9uIY

He's pointing out that although this type of thing has already been done before by automated inputs (such as this video https://www.youtube.com/watch?v=OPcV9uIY5i4 https://www.youtube.com/watch?v=OPcV9uIY5i4 ), this is the first time a human has done it.