When I read this I just feel like Sussman is getting out of touch and maybe a little disillusioned. From the wording he seems annoyed about the change, isn't even sure why it was made "probably because there's some library for robots", has gone from someone who would have a complete understanding of complex systems to someone who sounds more like a frustrated beginner. "Doing basic science on libraries to see how they behave" instead of grabbing the source and looking at it - he is expressing the view of someone who wants to complete their ticket in Jira without too much effort and go home for the night rather than someone with an actual curiosity and enjoyment of what they are doing.
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