This is a "Wild Mass Guess" entry, where we pull out all the sanity stops on theorizing. The regular entry on this topic is elsewhere. Please see this programme note.
QI
The Final Question
The answer to the very last question of Series Z will be "blue whale".
Or Kestrels, if Phil's on.
Or the answer to the very last question on either Stephen's or Alan's last episode (may it never come!)
