Since decades Lisp provides FIRST and REST additionally to CAR and CDR. It's considered good style to use FIRST / REST in list operations and CAR / CDR in gener

Since decades Lisp provides FIRST and REST additionally to CAR and CDR. It's considered good style to use FIRST / REST in list operations and CAR / CDR in general cons cell operations. CAR/CDR work well in practice, because there are also functions like (CDADR ...), which is (CDR (CAR (CDR ...))) abbreviated.