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Casper's Dictum is a law in forensic medicine that states the ratio of time a body takes to putrefy in different substances – 1:2:8 in air, water and earth. Cassie's law describes the effective contact angle θ c for a liquid on a composite surface. Cassini's laws provide a compact description of the motion of the Moon.
A proverb (from Latin: proverbium) or an adage is a simple, traditional saying that expresses a perceived truth based on common sense or experience. Proverbs are often metaphorical and are an example of formulaic language. [1] [2] A proverbial phrase or a proverbial expression is a type of a conventional saying similar to proverbs and ...
Campbell's law is an adage developed by Donald T. Campbell, a psychologist and social scientist who often wrote about research methodology, which states: . The more any quantitative social indicator is used for social decision-making, the more subject it will be to corruption pressures and the more apt it will be to distort and corrupt the social processes it is intended to monitor.
Goodhart's law. Goodhart's law is an adage often stated as, "When a measure becomes a target, it ceases to be a good measure". [1] It is named after British economist Charles Goodhart, who is credited with expressing the core idea of the adage in a 1975 article on monetary policy in the United Kingdom: [2] Any observed statistical regularity ...
Murphy's law. Murphy's law [a] is an adage or epigram that is typically stated as: "Anything that can go wrong will go wrong." In some formulations, it is extended to "Anything that can go wrong will go wrong, and at the worst possible time." Though similar statements and concepts have been made over the course of history, the law itself was ...
Matthew effect. The Matthew effect of accumulated advantage, sometimes called the Matthew principle, is the tendency of individuals to accrue social or economic success in proportion to their initial level of popularity, friends, and wealth. It is sometimes summarized by the adage or platitude "the rich get richer and the poor get poorer".
Crab mentality. Live crabs in a bucket. Look up crab mentality in Wiktionary, the free dictionary. Crab mentality, also known as crab theory, [1] [2] crabs in a bucket [a] mentality, or the crab-bucket effect, is a way of thinking usually described by the phrase "if I can't have it, neither can you". [3]
The theory of recapitulation, also called the biogenetic law or embryological parallelism —often expressed using Ernst Haeckel 's phrase " ontogeny recapitulates phylogeny "—is an historical hypothesis that the development of the embryo of an animal, from fertilization to gestation or hatching ( ontogeny ), goes through stages resembling or ...