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Action at a Distance

The concept that an object can be moved, changed, or otherwise affected without being physically touched (as in mechanical contact) by another object.

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Activation Energy

The minimum energy which must be available to a chemical system with potential reactants to result in a chemical reaction.

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Archimedean Point

Punctum Archimedes

Hypothetical vantage point from which an observer can objectively perceive the subject at hand, with a view of the entire system.

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Blind Experiment

An experiment in which information about the test is masked (kept) from the participant, to reduce or eliminate bias, until after a trial outcome is known. If both tester and subject are blinded, the trial is called a double-blind experiment.

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Catalyst

In chemistry, it is a substance which increases the rate of a reaction (or to enable it to occur at all). Applied more generally, it can be something that causes change.

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Churn

Red Queen Effect · Red Queen's Race

An evolutionary hypothesis which proposes that organisms must constantly adapt, evolve, and proliferate not merely to gain reproductive advantage, but also simply to survive while pitted against ever-evolving opposing organisms in a constantly changing environment.

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Congruence Bias

Bias occurs due to people's overreliance on directly testing a given hypothesis as well as neglecting indirect testing.

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Coolidge Effect

A biological phenomenon where males exhibit renewed sexual interest whenever a new female is introduced to have sex with, even after cessation of sex with prior but still available sexual partners.

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Copernican Principle

Principle of Relativity

The principle that humans, on the Earth or in the Solar system, are not privileged observers of the universe.

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Counterfactual

A claim, hypothesis, or other belief that is contrary to the facts and suggests a hypothetical state of the world in which to assess the impact of an action.

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Courtesy Bias

The tendency for respondents to understate dissatisfaction because they don't want to offend the organization seeking their opinion.

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Cute Aggression

Playful Aggression

Superficially aggressive behavior caused by seeing something cute, such as a human baby or young animal.

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Defensible Space Theory

A residential environment whose physical characteristics — building layout and site plan — function to allow inhabitants themselves to become key agents in ensuring their security.

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Drake Equation

Sketch of Drake Equation

A probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy.

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Entropy

The Second Law of Thermodynamics

A concept principally demonstrated in physics around the idea of irreversibility, where in a closed system, chaos or randomness increases over a time from order. The increase in entropy accounts for the irreversibility of natural processes, and the asymmetry between future and past. Commonly summarized as not being able to unscramble an egg.

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Eternal Return

Concept in philosophy and religion that suggests that the universe and all existence repeats itself infinitely, with everything that has happened before happening again in an endless cycle.

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Expectation Effect

Experimenter's Bias · Expectation Bias · Observer Effect · Subject-Expectancy Effect

The bias for pre-existing expectations in observing a phenomenon to invariably influence the outcome of that observation.

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Fermi Paradox

Great Filter

The apparent contradiction between the lack of evidence and high probability estimates for the existence of extraterrestrial civilizations.

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Flynn Effect

The substantial and long-sustained increase in both fluid and crystallized intelligence test scores that was measured in many parts of the world over the 20th century.

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Freeze-Flight-Fight-Forfeit

The fundamental response options when humans (and other animals) are exposed to stressful or threatening situations, often summarized by the simpler "fight or flight" phrase.

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Gaia Hypothesis

Gaia Theory · Gaia Principle

A theory proposing that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating, complex system that helps to maintain and perpetuate the conditions for life on the planet.

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Giran

The work draws on the Wiradjuri concept of giran which describes the winds, change, as well as feelings of fear and apprehension. — [

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Haldane's Rule of the Right Size

The biological notion that every organism has an optimum size, and a change in size inevitably leads to a change in form.

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Half-Life

Sketch of Half-Life

A probabilistic rate of decay where the quantity of something is reduced by half. Used most often in physics to describe the exponential decay of radioactive elements.

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Hawthorne Effect

Observer Effect

A type of reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed.

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Hebbian Theory

Hebb's Rule · Hebb's Postulate · Cell Assembly Theory

A neuroscientific theory claiming that an increase in synaptic efficacy arises from a cell's repeated and persistent stimulation. It is an attempt to explain synaptic plasticity — the adaptation of brain neurons during the learning process. Commonly summarized as, "What fires together, wires together."

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Heisenberg Uncertainty Principle

Uncertainty Principle

In physics, a fundamental limit to the precision with which certain pairs of physical properties of a particle (e.g. electron or quark), such as position and momentum, can be known.

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Herd Immunity

Herd Effect · Population Immunity

A form of indirect protection from a disease or circumstance when a large proportion of a population has become inoculated to it, thus protecting the at-risk individuals.

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Hysteresis

The dependence of the state of a system on its history. For example, a magnet may have more than one possible magnetic moment in a given magnetic field, depending on how the field changed in the past.

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Ideal Free Distribution

In ecology, a way in which animals distribute themselves among several patches of resources. The theory predicts that the distribution of animals among patches will minimize resource competition and maximize fitness.

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Kardashev scale

Theoretical framework for measuring a civilization's technological advancement based on its ability to harness and utilize energy.

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Keystone Species

A species that has a disproportionately large effect on its environment relative to its abundance. Such species are described as playing a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community.

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Law of Two-thirds

(price, quality, speed)

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Maladaptation

A trait that is more harmful than helpful — in contrast with an adaptation, which is more helpful than harmful.

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Mismatch Conditions

Problems that are caused by organisms being imperfectly or inadequately adapted to novel environmental conditions.

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Natural Selection

The differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in heritable traits of a population over time.

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Nature Vs. Nurture

A debate about human behavior as determined by a person's genes (nature), or by the environment during a person's life and upbringing (nurture).

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North Star

A target that exhibits qualities of fixedness, observability, simplicity, and durability.

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Observational Error

Measurement Error

The difference between a measured value of a quantity and its true value.

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Planck's Principle

The view that scientific change does not occur because individual scientists change their mind, but that successive generations of scientists have different views.

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Polythetic Entitation

The argument that in biological classification, no single entity or characteristic is without exception simultaneously sufficient and necessary for group membership.

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Predator Satiation

Predator Saturation

Sketch of Predator Satiation

An adaptation in which prey briefly occur at high population densities which overwhelms and satisfies predators thereby reducing the probability of an individual prey being eaten. The most notable example of this are the periodic cicadas.

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Prospect-Refuge

A theory that suggests that spaces we find most acceptable to be in present us with great opportunity, yet we must be in a place of safety at the time, i.e. "to see without being seen."

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Publication Bias

A bias in academic research that favors the publishing of novel or interesting results (at the expense of 'null' results) — which skews the publishing literature.

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Punctuated Equilibrium

A theory in evolutionary biology that once species appear in the fossil record the population will become stable, showing little evolutionary change for most of its geological history, save for periodic eras of massive change and diversity.

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R0

A mathematical term that indicates how contagious an infectious disease is, also known as its reproduction number. Specifically, it is the average number of people who will contract a contagious disease from one person with that disease. For comparison, the R0 value of the 1918 pandemic was estimated to be between 1.4 and 2.8, the common cold at between 2-3, and COVID-19 to be estimated at anywhere from 2-6.

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Red Queen Hypothesis

Evolutionary theory that suggests organisms must constantly evolve and adapt simply to maintain their fitness and survive in an ever-changing and competitive environment, inspired by a passage in Lewis Carroll's Through the Looking-Glass.

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Relative Deprivation

The experience of being deprived resources to which one is accustomed — can be necessity-based (as in food, water, shelter) or experiential (lifestyle, habits, activities).

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Response Bias

A wide range of cognitive biases that influence the responses of participants away from an accurate or truthful response.

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Savanna Preference

Preference for people to prefer savanna-like environments that are expansive, show scattered trees, water, and uniform grasses — based on the belief that early humans evolved in such environments that thus lends a genetic disposition towards favoring such environments even artificially (parks, golf courses, overlooks).

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Schrödinger's Cat

A thought experiment illustrating a conundrum in quantum mechanics as applied to everyday objects. The scenario presents a cat that may be simultaneously both alive and dead — as a result of being linked to a random subatomic event that may or may not occur.

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Selfish Herd Theory

The theory that individuals within a population attempt to reduce their predation risk by putting other conspecifics between themselves and predators.

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Sensitivity Analysis

An analysis of how a system changes by some adjustment to inputs; one changes the model and observe the behavior. Specific to a quantitative model it's, determining how the independent variable values will impact a dependent variable given a set of assumptions.

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Shinrin-yoku

This is the healing way of Shinrin-yoku Forest Therapy, the medicine of simply being in the forest. Shinrin-yoku is a term that means "taking in the forest atmosphere" or "forest bathing." It was developed in Japan during the 1980s and has become a cornerstone of preventive health care and healing in Japanese medicine.

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Signal-to-Noise Ratio

A measure used in science and engineering that compares the level of a desired signal to the level of background noise.

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Simon Effect

The finding that reaction times are usually faster, and reactions are usually more accurate, when the stimulus occurs in the same relative location as the response, even if the stimulus location is irrelevant to the task.

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Social Desirability Bias

A type of response bias that demonstrates the tendency of survey respondents to answer questions in a manner that will be viewed favorably by others.

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Spandrel

Architectural term that describes the triangular space between the top of an arch and the rectangular frame surrounding it, often used metaphorically to describe a byproduct or unintended consequence of an evolutionary or developmental process.

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Stigler's Law of Eponymy

The notion that no scientific discovery is named after its original discoverer. Examples include Hubble's law (derived by Georges Lemaître two years before Edwin Hubble), the Pythagorean theorem (known to Babylonian mathematicians before Pythagoras), and Halley's comet (observed by astronomers since at least 240 BC).

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Surrogation

Phenomenon in which the measure of an item of interest evolves to replace the item itself. An often-used example if of a manager beginning to believe that a customer satisfaction survey score is actually customer satisfaction.

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Thought Experiment

Considers some hypothesis, theory, or principle for the purpose of thinking through its consequences, often because to run the \*actual\* experiment is unfeasible, expensive, or dangerous.

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Umwelt

The term is usually translated as "self-centered word" and represents an organism's model of the world.

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