This has been linked on HN many times over a period of 5 years or more. While I don't recall with certainty I expect the list has been added to over time and R

This has been linked on HN many times over a period of 5 years or more. While I don't recall with certainty I expect the list has been added to over time and Rich may have added Programming Clojure with the thought of it being a recommendation rather than considering this view of the list. Obviously I'm speculating.