Lispworks Personal Editon을 맥에서 쓰고 있는데..

        한 PDF 외국 서적을 보니 이런식의 예제가 있더라구요

        > (def my-data (list 30 40 50 60))

        MY-DATA

        > my-data

        (30 40 50 60)

        이런 식입니다만..

        전 똑같이 했더니 이런 메세지가 뜸.

        > (defun my-data (list 30 40 50 60))

        MY-DATA

        > my-data

        Error: The variable MY-DATA is unbound.
           1 (continue) Try evaluating MY-DATA again.
           2 Specify a value to use this time instead of evaluating MY-DATA.
           3 Specify a value to set MY-DATA to.
           4 Return the result of calling (MY-DATA) instead.
           5 (abort) Return to level 10.
           6 Return to debug level 10.
           7 Return to level 9.
           8 Return to debug level 9.
           9 Return to level 8.
          10 Return to debug level 8.
          11 Return to level 7.
          12 Return to debug level 7.
          13 Return to level 6.
          14 Return to debug level 6.
          15 Evaluate (QUOTE CAR) and ignore the rest.
          16 Return to level 5.
          17 Return to debug level 5.
          18 Return to level 4.
          19 Return to debug level 4.
          20 Return to level 3.
          21 Return to debug level 3.
          22 Return to level 2.
          23 Return to debug level 2.
          24 Return to level 1.
          25 Return to debug level 1.
          26 Return to level 0.
          27 Return to top loop level 0.
        
        Type :b for backtrace, :c <option number> to proceed,  or :? for other options

        이게 뜹니다. 왜 에러가 뜨는건지... 제가 어디서 잘못한건지 답변 좀 부탁드림다 ㅠㅠ

아 때려죽이고 싶네. 이렇게 배우기 힘들줄은 몰랐뜸요 ㅠ