CL-USER> (+ 42 42)
>>  Error: The value 42 is not of type NUMBER.
>>  To continue, type :CONTINUE followed by an option number:
>>   1: 42 is a number though.
>>   2: Return to Lisp Toplevel.
>>  DEBUG> :CONTINUE 
>> Error: Shut up, I know better than you
>>  To continue, type :CONTINUE followed by an option number:
>>   1: Return to Lisp Toplevel.


awesome