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Under the classical theory of concepts, how human minds represent a category X, gives rise to a set of individually necessary conditions that define X. Together, these individually necessary conditions are sufficient to be X. [10] This contrasts with the probabilistic theory of concepts which states that no defining feature is necessary or ...
One of the earliest recorded instances of the proverb is in one of Aesop’s Fables, “The Crow and the Pitcher” from the mid 6th century BCE. Plato's Republic says "our need will be the real creator", [5] which Jowett's 1894 translation rendered loosely as "The true creator is necessity, who is the mother of our invention."
In philosophy, Occam's razor (also spelled Ockham's razor or Ocham's razor; Latin: novacula Occami) is the problem-solving principle that recommends searching for explanations constructed with the smallest possible set of elements.
For this reason, or perhaps for their familiarity and simplicity, necessity and possibility are often casually treated as the subject matter of modal logic. Moreover, it is easier to make sense of relativizing necessity, e.g. to legal, physical, nomological, epistemic, and so on, than it is to make sense of relativizing other notions.
The theory is a classification system intended to reflect the universal needs of society as its base, then proceeding to more acquired emotions. [18] The hierarchy is split between deficiency needs and growth needs, with two key themes involved within the theory being individualism and the prioritization of needs.
A posteriori necessity existing would make the distinction between a prioricity, analyticity, and necessity harder to discern because they were previously thought to be largely separated from the a posteriori, the synthetic, and the contingent. [3] (a) P is a priori iff P is necessary. (b) P is a posteriori iff P is contingent.
Military necessity is governed by several constraints: an attack or action must be intended to help in the military defeat of the enemy; it must be an attack on a military objective; [1] and the harm caused to civilians or civilian property must be proportional and not "excessive in relation to the concrete and direct military advantage anticipated".
Necessitarianism is a metaphysical principle that denies all mere possibility; there is exactly one way for the world to be.. It is the strongest member of a family of principles, including hard determinism, each of which deny libertarian free will, reasoning that human actions are predetermined by external or internal antecedents.