REVIEW COMMENT "The philosophical study of humour has a complex and fitful history: few people have been brave enough to write about humour seriously, and those who have tend to disagree with one another. For those seeking an entry point, Paul McDonald’s The Philosophy of Humour (2012) gives a useful overview of the major theories. There are those who believe that laughter derives from a sense of superiority (Hobbes and Bergson) or from a sense of relief, or release of energy (Freud’s “economy of psychic expenditure”). But the earliest, most primal examples of humour all seem to have some sort of incongruity at their heart. McDonald gives the example of “the Lion Man figure found in 1939 in the Swabian Alps”, which is thought to be about 35,000 years old. Having the body of a lion and the legs of a man, it is thought to be one of the earliest examples of represented incongruity, dating from the time when human beings first developed “an ability to juxtapose disparate concepts”. Jonathan Coe, The Guardian.