The section about promises is weird. Why would you do that? It's clearly a far better match for the kind of symbolic computation stuff lisp is famous for and fu

The section about promises is weird. Why would you do that? It's clearly a far better match for the kind of symbolic computation stuff lisp is famous for and functional languages in general tend to be good at, and that compilers often have to deal with (which being why those languages are so good at them). Heck, the article even mentions that `plan` is basically a compiler.