Requiem sharks are a family, Carcharhinidae, of sharks in the order Carcharhiniformes, containing migratory, live-bearing sharks of warm seas (sometimes of brackish or fresh water) such as the tiger shark, the blue shark, the bull shark, and the milk shark.

The name may be related to the French word for shark, requin, itself of disputed etymology (chien de mer or Latin requiem ("rest"), which would thereby create a cyclic etymology: requiem-requin-requiem.

Family members have the usual carcharhiniform characteristics. The eyes are round, and the pectoral fins are completely behind the five gill slits. Most species are viviparous, the young being born fully developed. They vary widely in size, from as little as 69 centimetres (2.26 ft) adult length in the Australian sharpnose shark, up to 7.5 metres (25 ft) adult length in the tiger shark.

Requiem sharks are responsible for a large proportion of attacks on humans; however, due to the difficulty in identifying individual species, there is a degree of inaccuracy in attack records.

"The Man" is a slang phrase that may refer to the government or to some other authority in a position of power. In addition to this derogatory connotation, it may also serve as a term of respect and praise.

The phrase "the Man is keeping me down" is commonly used to describe oppression. The phrase "stick it to the Man" encourages resistance to authority, and essentially means "fight back" or "resist", either openly or via sabotage.

The earliest recorded use^{[citation needed]} of the term "the Man" in the American sense dates back to a letter written by a young Alexander Hamilton in September 1772, when he was 15. In a letter to his father James Hamilton, published in the Royal Dutch-American Gazette, he described the response of the Dutch governor of St. Croix to a hurricane that raked that island on August 31, 1772. "Our General has issued several very salutary and humane regulations and both in his publick and private measures, has shewn himself the Man." ^{[dubious – discuss]} In the Southern U.S. states, the phrase came to be applied to any man or any group in a position of authority, or to authority in the abstract. From about the 1950s the phrase was also an underworld code word for police, the warden of a prison or other law enforcement or penal authorities.

Peter Guy Winch (14 January 1926, London – 27 April 1997, Champaign, Illinois) was a British philosopher known for his contributions to the philosophy of social science, Wittgenstein scholarship, ethics, and the philosophy of religion. Winch is perhaps most famous for his early book, The Idea of a Social Science and its Relation to Philosophy (1958), an attack on positivism in the social sciences, drawing on the work of R. G. Collingwood and Ludwig Wittgenstein's later philosophy. Winch describes his aims in the opening paragraphs of the first chapter:

Major influences upon Winch include Ludwig Wittgenstein, Rush Rhees, R. G. Collingwood and Simone Weil. He gave rise to a form of philosophy that has been given the name ‘sociologism’. He also bears responsibility for a small school of sociology that was prepared to accept his radical criticism of the subject.

Winch saw himself as an uncompromising Wittgensteinian. He was not personally acquainted with Wittgenstein; Wittgenstein’s influence upon him was mostly mediated through that of Rush Rhees, who was his colleague at Swansea University, and whom Wittgenstein appointed as one of his literary executors. In 1980 Winch published Wittgenstein’s Culture and Value, translated by himself. After the death of Rhees in 1989 he took over his position as literary executor.