Evidence
Videos
Evidence for a proposition is what supports the proposition. It is usually understood as an indication that the supported proposition is true. What role evidence plays and how it is conceived varies from field to field.
These contrails at an airshow provide evidence regarding the aircraft's flight path as well as the weather conditions.
The balance scales seen in depictions of Lady Justice can be seen as representing the weighing of evidence in a legal proceeding.
An FBI Evidence Response Team gathering evidence by dusting an area for fingerprints
Bias
Videos
Bias is a disproportionate weight in favor of or against an idea or thing, usually in a way that is inaccurate, closed-minded, prejudicial, or unfair. Biases can be innate or learned. People may develop biases for or against an individual, a group, or a belief. In science and engineering, a bias is a systematic error. Statistical bias results from an unfair sampling of a population, or from an estimation process that does not give accurate results on average.
Box offered by tobacco lobbyists to Dutch Member of the European Parliament Kartika Liotard in September 2013
Suffragette organizations campaigned for women's right to vote.