Why we laugh has been the subject of serious academic study, examples being:
Immanuel Kant, in Critique of Judgement (1790) states that "Laughter is an effect that arises if a tense expectation is transformed into nothing." Here is Kant's 218-year old joke and his analysis:
"An Englishman at an Indian's table in Surat saw a bottle of ale being opened, and all the beer, turned to froth, rushed out. The Indian, by repeated exclamations, showed his great amazement. - Well, what's so amazing in that? asked the Englishman. - Oh, but I'm not amazed at its coming out, replied the Indian, but how you managed to get it all in. - This makes us laugh, and it gives us a hearty pleasure. This is not because, say, we think we are smarter than this ignorant man, nor are we laughing at anything else here that it is our liking and that we noticed through our understanding. It is rather that we had a tense expectation that suddenly vanished..."
Henri Bergson, in his book Le rire (Laughter, 1901), suggests that laughter evolved to make social life possible for human beings.
Sigmund Freud's "Jokes and their Relation to the Unconscious". (Der Witz und seine Beziehung zum Unbewußten).
Arthur Koestler, in The Act of Creation (1964), analyses humour and compares it to other creative activities, such as literature and science.
Marvin Minsky in Society of Mind (1986).
Marvin Minsky suggests that laughter has a specific function related to the human brain. In his opinion jokes and laughter are mechanisms for the brain to learn nonsense. For that reason, he argues, jokes are usually not as funny when you hear them repeatedly.
Edward de Bono in "The Mechanism of the Mind" (1969) and "I am Right, You are Wrong" (1990).
Edward de Bono suggests that the mind is a pattern-matching machine, and that it works by recognizing stories and behaviour and putting them into familiar patterns. When a familiar connection is disrupted and an alternative unexpected new link is made in the brain via a different route than expected, then laughter occurs as the new connection is made. This theory explains a lot about jokes. For example:
Why jokes are only funny the first time they are told: once they are told the pattern is already there, so there can be no new connections, and so no laughter.
Why jokes have an elaborate and often repetitive set up: The repetition establishes the familiar pattern in the brain. A common method used in jokes is to tell almost the same story twice and then deliver the punch line the third time the story is told. The first two tellings of the story evoke a familiar pattern in the brain, thus priming the brain for the punch line.
Why jokes often rely on stereotypes: the use of a stereotype links to familiar expected behaviour, thus saving time in the set-up.
Why jokes are variants on well-known stories (e.g. the genie and a lamp and a man walks into a bar): This again saves time in the set up and establishes a familiar pattern.
In 2002, Richard Wiseman conducted a study intended to discover the world's funniest joke.
Humour and Jokes have also been concluded to be logic that is completely random or vice versa.[citation needed]
Laughter, the intended human reaction to jokes, is healthy in moderation, uses the stomach muscles, and releases endorphins, natural "feel good" chemicals, into the brain.
