I was a huge fan of xlispstat in the 1990s (which I've archived on Github at (https://github.com/jhbadger/xlispstat https://github.com/jhbadger/xlispstat), but

I was a huge fan of xlispstat in the 1990s (which I've archived on Github at (https://github.com/jhbadger/xlispstat https://github.com/jhbadger/xlispstat), but the simple fact is that the majority of the statistics community just didn't like Lisp-like languages, and not only xlispstat, but newer projects like Incanter (statistics for Clojure) have pretty much failed as well. R meets its need far better than a Scheme library that nobody would have used. It's yet another example of "worse is better".