#paradox

• Abilene paradox — A term used in medical psychology, clinical risk management, and bioethics primarily through the 'Abilene Paradox'; it describes a situation where a medical team or a group of specialists collectively decides on a wrong course of action (e.g., a risky treatment plan), even though individually each member believes it is incorrect, due to the fear of challenging the apparent consensus of the group.
• Kangaroo thorn — A thorny shrub or small tree species native to Australia, officially recognized in modern taxonomy under the accepted name 'Acacia paradoxa', but frequently referenced in historical and horticultural literature by its synonym 'Acacia armata'. The plant is distinguished by a dense canopy, angular branches covered with sharp stipular spines, and asymmetric, wavy phyllodes that give it an impenetrable appearance; for this reason, it was historically used to create defensive hedges, while also being valued for its bright yellow globular inflorescences.
• Allais — A French family name of world renown, consecrated in science especially through Maurice Allais (1911–2010), a famous French economist and physicist, laureate of the Nobel Prize in Economics in 1988. His name is associated with paradoxical phenomena in decision theory (Allais Paradox) and in physics (Allais Effect regarding pendulum behavior during eclipses).
• Anti-logical — Contrary to the laws of formal logic, reason, or common sense; presenting a contradictory structure that eliminates the possibility of coherent deduction. In a philosophical sense, it describes an aberrant reasoning, an absurd paradigm, or a paradoxical system of thought that defies the fundamental principles of identity and non-contradiction.
• Antilogy — A contradiction between two ideas, statements, laws, or logical principles that are otherwise considered valid in isolation; a contradictory argumentation or figure of speech based on a direct conceptual opposition. In a structural and dialectical sense, it represents a form of antinomy or paradox historically used in classical rhetoric to deconstruct an opponent's discourse.
• Antinomy — An archaic form, rare variant, or linguistic alteration of antinomy, designating a profound contradiction between two laws, principles, ideas, or conclusions that are otherwise considered valid in isolation; structurally, it represents a logical paradox or an insurmountable conceptual opposition used in philosophical or dialectical argumentation.
• Antinomic — Containing an antinomy or relating to an antinomy; expressing a profound and seemingly insoluble contradiction between two laws, principles, theses, or conclusions, even though each of them is considered valid, logically demonstrable, or historically and legally justified.
• Antinomy — An insoluble contradiction between two laws, two legal provisions, or two philosophical theses that are equally logical, rational, and seemingly demonstrable; in the Kantian system, it represents the inevitable conflict into which pure reason enters with itself when trying to conceive the infinite or the absolute through the phenomenal world.
• Antinomosie — A rare technical term used to describe a figure of speech or a discursive device in which contradictory concepts or designations are used to express a profound reality; a controlled semantic or lexical conflict, related to the oxymoron or antithesis, aimed at highlighting a structural incompatibility of language.
• Aporeme — A difficult problem, a theoretical dilemma, or a seemingly insoluble logical paradox that arises in reasoning when two contradictory arguments appear equally well-founded and rational; a statement that generates an aporia. In Aristotelian logic or scholastic disputes, the concept denotes a conceptual knot blocking rational deduction until contradictions are resolved.
• Aporetic — Pertaining to or relating to an aporia, specific to a state of theoretical doubt, conceptual uncertainty, or logical paradox; characterized by the presence of seemingly insoluble rational difficulties. In ancient philosophy, particularly in Plato's early dialogues, the term describes a method of inquiry leading interlocutors into an intellectual impasse, leaving the problem open precisely to stimulate profound critical reflection.
• Aporetics — A philosophical doctrine, discipline, or method concerned with the systematic study, cataloging, and analysis of aporias, logical paradoxes, and theoretical contradictions within a system of thought; research focused on the nature of conceptual impasses. Initially theorized in ancient schools of dialectics, it represents a crucial critical tool for deconstructing dogmatic axioms and highlighting the limits of human reason.
• Aporia — A rational difficulty, a logical paradox, or a seemingly insoluble theoretical impasse that arises in reasoning due to the presence of contradictory yet equally well-founded arguments; an unresolved conceptual knot. In ancient Greek philosophy (for instance, in Zeno's paradoxes or Socratic dialogues), it represents the stage of intellectual deadlock designed to demonstrate the limits of dogmatic thought.
• Self-negated — Having been rejected, invalidated, or canceled by itself; a system, concept, statement, or individual that has undergone a process of self-negation, thereby losing its initial validity or former identity. In logic and epistemology, it describes a paradoxical state where the constitutive terms of a theoretical structure mutually cancel each other out by their very utterance.