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Opinion evidence refers to direct evidence outlining what the expert witness, believes, or infers in regard to facts, as distinguished from personal knowledge of the facts themselves. [1] In common law jurisdictions the general rule is that a witness is supposed to testify as to what was observed and not to give an opinion on what was observed.
Such evidence is expected to be empirical evidence and interpretable in accordance with the scientific method. Standards for scientific evidence vary according to the field of inquiry, but the strength of scientific evidence is generally based on the results of statistical analysis and the strength of scientific controls. [citation needed]
There are many philosophical and historical theories as to how scientific consensus changes over time. Because the history of scientific change is extremely complicated, and because there is a tendency to project "winners" and "losers" onto the past in relation to the current scientific consensus, it is very difficult to come up with accurate and rigorous models for scientific change. [17]
Yet the scientific evidence for human evolution keeps piling up with many discoveries of ancient bones, stone tools, cave drawings and other evidence of ancient life. For most people, only modern ...
The channel was launched as an "original channel", which meant that YouTube funded the channel. [3] [4] The show's initial grant was projected to expire in 2014, and in response, on September 12, 2013, SciShow joined the viewer-funding site Subbable, created in part by Green. [5] [6] In 2014, the channel landed a national advertisement deal ...
A new study says that exhaust from gasoline containing lead may have contributed to ADHD, anxiety, and other mental health disorders in a large segment of the population
A recent study by the University of Southern California revealed that exposure to air pollution can harm children's learning and memory, the LA Post reports.. Ammonium nitrate, a specific ...
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 ...