Bit misleading, parameters here are already obtained - the only lisp part is applying pre-obtained weights to an input and computing the output (i.e. no training here).
That aside, this is very cool nevertheless.
This is super cool, next step - full autodiff support to train it in lisp too.
Interesting. Of course some basic built-in IO or interface with external world is important.
In case of SectorLisp, that's good ol' BIOS I/O for interacting with the keyboard and screen. Having any other interface would require implementing it first - remember that SectorLisp is meant to run on bare hardware.