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  • Bhabani Mishra thinks this is interesting:

(defun start-over () (defparameter *small* 1) (defparameter *big* 100) (guess-my-number))

From

Cover of Land of Lisp

Note

Use setf instead?

(defun start-over ()
(setf small 1)
(setf big 100)
(guess-my-number))