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The Jabber-notty

Age 16 to 18
Challenge Level

Lewis Carrol thought that (in Through the looking glass, and what Alice found there)

'Twas brillig, and the slithy toves Did gyre and gimble in the wabe'

I disagree entirely. Construct the negation of this sentence to represent my view.

Did you know... ?

Lewis Carrol was a mathematician who delighted in logical games and wordplay. His books are full of the sorts of sentences which often amuse those with a good understanding of logic.