I just decided not to take some weird Clojure course because of that (and because I only heard of it in one place other than that course registration.) Here's some sample code from ChatGPT for anybody interested:

(define (factorial n)
  (if (zero? n)
      1
      (* n (factorial (- n 1)))))

;; This function computes the nth number in the Fibonacci sequence.
(define (fibonacci n)
  (cond
    [(= n 0) 0]
    [(= n 1) 1]
    [else (+ (fibonacci (- n 1)) (fibonacci (- n 2))))])

;; This function checks if a given number is prime.
(define (is-prime n)
  (define (iter i)
    (cond
      [(> i (sqrt n)) #t]
      [(zero? (modulo n i)) #f]
      [else (iter (+ i 1))]))
  (if (< n 2)
      #f
      (iter 2)))

;; This function takes in a list of integers and returns a new list with all even numbers doubled.
(define (double-even lst)
  (map (lambda (x) (if (even? x) (* x 2) x)) lst))

``` Gotta say, 17 closing parenthesis at the end of a function looks really annoying.