PG on the cover of Forbes(forbes.com)

    // (define Y
    //   (lambda (X)
    //    ((lambda (procedure)
    //       (X (lambda (arg) ((procedure procedure) arg))))
    //     (lambda (procedure)
    //       (X (lambda (arg) ((procedure procedure) arg)))))))
    var Y = function(X) {
        return (function (procedure) {
            return X(function (arg) {
                return procedure(procedure)(arg);
            });
        })(function (procedure) {
            return X(function (arg) {
                return procedure(procedure)(arg);
            });
        });
    }

    //  (define F*
    //   (lambda (func-arg)
    //    (lambda (n)
    //      (if (zero? n)
    //          1
    //          (* n (func-arg (- n 1)))))))
    var F = function(func_arg) {
        return function(n) {
            if (n === 0)
                return 1;
            else
                return n * func_arg(n - 1);
        };
    }

    //  (define fact (Y F*))
    var fact = Y(F);

    //  (write (fact 8))
    console.log(fact(8));