anchor.diff:      (assert-equal ___ how-many-in-list)
       (assert-equal ___ biggest-in-list))
     (let ((sum 0))
  -    "write your own do-list here to calculate the sum of some-primes"
  +    "write your own dolist here to calculate the sum of some-primes"
       "you may be interested in investigating the 'incf' function"
       ;(dolist ... )
       (assert-equal 999607602 sum)))
  
positive.code: 
  
  (define-test test-mapcar
      "mapcar takes a list an a function.  It returns a new list
       with the function applied to each element of the input"
    (let ((mc-result (mapcar #'evenp '(1 2 3 4 5))))
      (assert-equal mc-result ____)))
  
negative.code: ;; This set of koans will introduce a few of the most common ones
  
  
  ;; Dolist evaluates a form for every element of a list.
  
  (defvar some-primes '(10301 11311 19991 999565999))
  
  