> The code works just fine in Common Lisp It would work fine in Lisp in general, since Lisp is typically late bound and can call global functions via the symbo

> The code works just fine in Common Lisp It would work fine in Lisp in general, since Lisp is typically late bound and can call global functions via the symbols. Thus in a function writing a call to an undefined function is not an error. The function only needs to exist at runtime, even then in many debuggers it could added and the computation can be resumed.