Unicorn cartoon. Do unicorns exist?
In the illustration a unicorn is reading a newspaper article stating “Unicorns don’t exist – the proof”.
The humour is that something that a creature that doesn’t exist is reading an article proving that it doesn’t exist, which is a paradox.
The cartoon is illustrates the concept that generally you can’t prove a negative such as “There are no unicorns”. For instance, in Britain all native swans are white, so all swans were assumed to be white – so it was easy to say “There are no black swans” – until they were discovered alive and well in Australia.
The argument is often applied to religion and the subject of attempting to prove the existence of god – can you prove the non-existence of god?
A cartoon about mythical or mythological creatures, the burden of proof