I don't mean to sound snarky in the least, genuinely curious, but haven't a large proportion of tinkerers, especially with an EE bent, tried to put a simple lisp interpreter on some limited hardware at some point in their lives? I certainly know that a bunch of people learning FPGA programming in a user group i once belonged to all tried to put a lisp machine on one after working through the last chapter of SICP, and there's that lovely article about lisp interpreters running on old JPL probes back in the day. What about this makes it revolutionary?