“There must also have been a Type D ark of the 
  Golgafrincham fleet, because Kickshaw was 
  clearly written for the Golgafrincham, but the 
  target group of the app cannot be assigned to 
  any of the three known population groups.
  Unfortunately, for the known reasons, this 
  conundrum will probably no longer be solved.”
   — Young Swill Centrists of 
        Gliese 667Cc
