Alan Sokal wrote an article for an American journal employing technical terminology
and making liberal references to certain scientists and linguistic theorists. He stated
that 'post-modern' science had done away with the concept of physical
reality. After publication, he revealed that what he wrote was a hoax .
He showed how post-modern theorists of language, etc. had adopted
technical language from science to put forward their theories. But they
did not understand the terminology, and so a lot of their writing was
completely meaningless.