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Sir Francis Galton was one of the emblematic figures in the history of psychology. The English psychologist and anthropologist cousin of Charles Darwin, and under his influence, after the publication of "Origin of Species" (1859), Galton introduced in psychology and anthropology idea of ​​heredity as an explanation of individual differences between people. Considered is a supporter of controversial theory of eugenics.

From small differed with titanic intellect - two years old he learned to read five course Latin, Greek and can divide multi-digit numbers, six swallows greedily adult literature, including Shakespeare, who reads for pleasure. Restless and inquisitive mind, Galton often experiment with them to find answers to case studies that excite him. His scientific curiosity sometimes leads to extremes and one of the examples that illustrate this is the case, his practice internship at a hospital in Birmingham.

Wanting to know what are the effects of the various drugs he takes small doses of any notes and reactions in a systematic way. Leaves with drugs whose names begin with the letter "A", but failed to hold up their enterprise after, reaching the drugs with the letter "C", takes oil from a plant of the spurge family (powerful laxative). The action puts the preparation point of the experiment. 

After years as an established authority in psychology and anthropology, Sir Francis Galton decided to conduct another kind of experiment. Before leaving on his usual walk on the streets of London, he stood before the mirror and confidently repeated several times aloud: "I am disgusting person hated by everyone in England." Having concentrated on this belief to the point of self-hypnosis, he went out for a walk.