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  2. Unintended consequences - Wikipedia

    en.wikipedia.org/wiki/Unintended_consequences

    An erosion gully in Australia caused by rabbits, an unintended consequence of their introduction as game animals. In the social sciences, unintended consequences (sometimes unanticipated consequences or unforeseen consequences, more colloquially called knock-on effects) are outcomes of a purposeful action that are not intended or foreseen.

  3. Half-life - Wikipedia

    en.wikipedia.org/wiki/Half-life

    In this situation it is generally uncommon to talk about half-life in the first place, but sometimes people will describe the decay in terms of its "first half-life", "second half-life", etc., where the first half-life is defined as the time required for decay from the initial value to 50%, the second half-life is from 50% to 25%, and so on.

  4. Biological half-life - Wikipedia

    en.wikipedia.org/wiki/Biological_half-life

    Absorption half-life 1 h, elimination half-life 12 h. Biological half-life ( elimination half-life , pharmacological half-life ) is the time taken for concentration of a biological substance (such as a medication ) to decrease from its maximum concentration ( C max ) to half of C max in the blood plasma .

  5. Cascade effect - Wikipedia

    en.wikipedia.org/wiki/Cascade_effect

    fault tree. A cascade effect is an inevitable and sometimes unforeseen chain of events due to an act affecting a system. [1] If there is a possibility that the cascade effect will have a negative impact on the system, it is possible to analyze the effects with a consequence / impact analysis.

  6. Consequence - Wikipedia

    en.wikipedia.org/wiki/Consequence

    Consequent, in logic, the second half of a hypothetical proposition or consequences; Consequentialism, a theory in philosophy in which the morality of an act is determined by its effects; Unintended consequences; Consequence, in operant conditioning, a result of some behavior

  7. Effective half-life - Wikipedia

    en.wikipedia.org/wiki/Effective_half-life

    Alternatively, since the radioactive decay contributes to the "physical (i.e. radioactive)" half-life, while the metabolic elimination processes determines the "biological" half-life of the radionuclide, the two act as parallel paths for elimination of the radioactivity, the effective half-life could also be represented by the formula: [1] [2]

  8. Black swan theory - Wikipedia

    en.wikipedia.org/wiki/Black_swan_theory

    A black swan (Cygnus atratus) in AustraliaThe black swan theory or theory of black swan events is a metaphor that describes an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with the benefit of hindsight.

  9. Nuclear fallout - Wikipedia

    en.wikipedia.org/wiki/Nuclear_fallout

    The second, depending on the height of detonation, is a large quantity of radioactive dust and sand with a short half-life. All nuclear explosions produce fission products, un-fissioned nuclear material, and weapon residues vaporized by the heat of the fireball.