> There is a reason you don't see meaning represented by structure in pretty much any other language besides Mathematica. Actually, this is done in Lisp and Pr

> There is a reason you don't see meaning represented by structure in pretty much any other language besides Mathematica. Actually, this is done in Lisp and Prolog all the time. Off the top of my head: J, K, Haskell, and Joy have take functions, and writing them in Lisp and Prolog is not difficult.