Inconsistent and UnInformative Error Messages

[KMP,ALAN at MIT-MC]

((LAMBDA (X Y) (+ X Y)) 1 . 2)
;((? 1 NIL NIL) (X Y)) TOO MANY ARGUMENTS SUPPLIED - APPLY

((LAMBDA (X Y) (+ X Y)) 2 . 3)
;#201300 UNEVALUABLE DATUM - EVAL

((LAMBDA (X Y) (+ X Y)) 3 . 4)
;LAMBDA UNDEFINED FUNCTION OBJECT

((LAMBDA (X Y) (+ X Y)) 4 . 5)
;((? 4 NIL NIL) (X Y)) TOO MANY ARGUMENTS SUPPLIED - APPLY

((LAMBDA (X Y) (+ X Y)) 5 . 6)
;((? 5 NIL NIL) (X Y)) TOO MANY ARGUMENTS SUPPLIED - APPLY

(QUIT)
:KILL

: We suspect that this generalizes. Perhaps a bit of error checking on
  the poor little actual args list would be in order? This bug was
  uncovered by some poor guy in :TEACH;LISP who had just figured out
  why (LAMBDA (X) X) didn't work and had FINALLY figured out that
  ((LAMBDA (X) ...) ...) was the thing to do in order to suppress the
  LAMBDA UNDEFINED FUNCTION message ... almost. Sigh.