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The invisible hand is a metaphor inspired by the Scottish economist and moral philosopher Adam Smith that describes the incentives which free markets sometimes create for self-interested people to accidentally act in the public interest, even when this is not something they intended. Smith originally mentioned the term in two specific, but ...
Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...
Within an ecological food chain, consumers are categorized into primary consumers, secondary consumers, and tertiary consumers. [3] Primary consumers are herbivores, feeding on plants or algae. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants).
Rational choice theory looks at three concepts: rational actors, self interest and the invisible hand. [4] Rationality can be used as an assumption for the behaviour of individuals in a wide range of contexts outside of economics. It is also used in political science, [5] sociology, [6] and philosophy. [7]
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
In other words, the Vanishing hand theory states that initially the Visible hand is present as industries require managerial cooperation and vertical integration for long term growth, but eventually fades away to a more Invisible hand in which specialization allows for market forces to coordinate more effectively leading to a quasi-Smithian ...
Food Chains is a 2014 American documentary film about agricultural labor in the United States directed by Sanjay Rawal. It was the Recipient of the 2015 James Beard Foundation Award for Special/Documentary.
The sociology of food is the study of food as it relates to the history, progression, and future development of society, encompassing its production, preparation, consumption, and distribution, its medical, ritual, spiritual, ethical and cultural applications, and related environmental and labour issues.