He could go further with the lisp comparison. In the abstract, forth is lisp with fixed argument counts (i.e., without parens) written backwards (i.e., on a stack).

If you went to someone who knew either language and described those two differences, they could easily make a reasonable version of the other.

Sweet! I learned to program by writing a Forth compiler. Was an excellent way to learn. I only discovered Lisp much later, and definitely like what I see, but haven't gotten around to learning it properly yet.

Interestingly, Lisp people think that Lisp doesn't have much syntax -- Forth has even less. It's basically words separated by spaces, and that's it.

Is it just me, or has Forth been getting quite a bit of mention recently? Perhaps it's because the Forth-derived Factor language is getting more popular.