Why is a Raven like a writing desk?

To answer you-know-who-should-not-be-watching-too-many-movies,

The following was wrote by Lewis Caroll in the preface to the 1896 edition of the book:

"Enquiries have been so often addressed to me, as to whether any answer to the Hatter's Riddle can be imagined, that I may as well put on record here what seems to me to be a fairly appropriate answer, viz: 'Because it can produce a few notes, tho they are very flat; and it is never put with the wrong end in front!' This, however, is merely an afterthought; the Riddle, as originally invented, had no answer at all."



But obviously: