user=> (not true) false user=> (not false) true ;; acts as complement of `boolean` user=> (boolean "a string") true user=> (not "a string") false user=> (boolean 1) true user=> (not 1) false
user=> (not true) false user=> (not false) true ;; acts as complement of `boolean` user=> (boolean "a string") true user=> (not "a string") false user=> (boolean 1) true user=> (not 1) false
user=> (not true) false user=> (not false) true ;; acts as complement of `boolean` user=> (boolean "a string") true user=> (not "a string") false user=> (boolean 1) true user=> (not 1) false