Word, especially the seemingly alien and/or ancient ones such as C, Forth, Lisp, Smalltalk, Haskell, APL etc. And once you know enough different languages; des

Word, especially the seemingly alien and/or ancient ones such as C, Forth, Lisp, Smalltalk, Haskell, APL etc. And once you know enough different languages; design and build your own [0], even if no one will use them. [0] https://github.com/codr7/g-fu https://github.com/codr7/g-fu