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  2. Scientific theory - Wikipedia

    en.wikipedia.org/wiki/Scientific_theory

    A scientific theory differs from a scientific fact or scientific law in that a theory seeks to explain "why" or "how", whereas a fact is a simple, basic observation and a law is an empirical description of a relationship between facts and/or other laws.

  3. Hypothesis - Wikipedia

    en.wikipedia.org/wiki/Hypothesis

    The hypothesis of Andreas Cellarius, showing the planetary motions in eccentric and epicyclical orbits. A hypothesis (pl.: hypotheses) is a proposed explanation for a phenomenon. A scientific hypothesis must be based on observations and make a testable and reproducible prediction about reality, in a process beginning with an educated guess or ...

  4. Fact - Wikipedia

    en.wikipedia.org/wiki/Fact

    The definition of a scientific fact is different from the definition of fact, as it implies knowledge. A scientific fact is the result of a repeatable careful observation or measurement by experimentation or other means, also called empirical evidence. These are central to building scientific theories.

  5. Evolution as fact and theory - Wikipedia

    en.wikipedia.org/wiki/Evolution_as_fact_and_theory

    [14] [15] Fact is also used in a wider sense to mean any theory for which there is overwhelming evidence. [16] According to Douglas J. Futuyma, [6] A fact is a hypothesis that is so firmly supported by evidence that we assume it is true, and act as if it were true. In the sense that evolution is overwhelmingly validated by the evidence, it is a ...

  6. Scientific method - Wikipedia

    en.wikipedia.org/wiki/Scientific_method

    The history of scientific method considers changes in the methodology of scientific inquiry, not the history of science itself. The development of rules for scientific reasoning has not been straightforward; scientific method has been the subject of intense and recurring debate throughout the history of science, and eminent natural philosophers and scientists have argued for the primacy of ...

  7. Empirical evidence - Wikipedia

    en.wikipedia.org/wiki/Empirical_evidence

    Empirical evidence is required for a hypothesis to gain acceptance in the scientific community. Normally, this validation is achieved by the scientific method of forming a hypothesis, experimental design, peer review, reproduction of results, conference presentation, and journal publication. This requires rigorous communication of hypothesis ...

  8. Fact–value distinction - Wikipedia

    en.wikipedia.org/wiki/Fact–value_distinction

    The fact–value distinction is a fundamental epistemological distinction described between: [1] Statements of fact (positive or descriptive statements), which are based upon reason and observation , and examined via the empirical method .

  9. Scientific evidence - Wikipedia

    en.wikipedia.org/wiki/Scientific_evidence

    A person's assumptions or beliefs about the relationship between observations and a hypothesis will affect whether that person takes the observations as evidence. [3] These assumptions or beliefs will also affect how a person utilizes the observations as evidence.