There are probably a few reasons. Julia has roots with MIT which immediately lends it some cachet, and probably made it easier to grow a vibrant community. Lu

There are probably a few reasons. Julia has roots with MIT which immediately lends it some cachet, and probably made it easier to grow a vibrant community. Lush (which is an unfortunate name btw) used Lisp syntax, which has never been favored by math, science and engineering types. It seems obvious that equations as expressed in the language should closely resemble those used in actual math - thus the syntax of languages like Fortran, Matlab and Julia. Writing (or reading): (setq vx (+ vx (* ax deltat))) ; update velocity is much more awkward than: vx += ax * deltat # update velocity This issue gets worse with more complex examples. Lush also allowed inline C, which was probably a bad design choice. Julia allows painless C library calls, which is much cleaner. Those are just a few thoughts off the top of my head...