Cereal crops fighting the climate chaos

Agriculture and climate experts have warned for some years that extreme climate events including severe droughts with frequent heatwaves drop the production of major staple food crops like wheat causing a severe threat to ...

Australia's Black Summer a climate wake-up call

The 2019/20 Black Summer bushfires are a "wake up call" demonstrating the extreme effects of climate change in Australia, according to a group of experts who've published a new study examining the factors that caused the ...

Roadmap offers solutions for future of food, global ag innovation

To deflect future world food crises created by climate change and growing consumer demand, a Cornell University-led international team of economists, scientists and business experts has created a road map for global agricultural ...

Time for scientists to speak up and be heard

Science and scientists are being viewed more positively by people across the Asia-Pacific, Europe, the US and other regions and countries as the COVID-19 pandemic peaks. Yet, ironically, despite the positive perception, people ...

What caused the U.S. anti-science trend?

Is the pandemic the most important election issue this year? That depends on whom you ask. Those who say that it is tend to favor overwhelmingly (82 percent) Joseph R. Biden, the Democratic Party nominee, yet only 24 percent ...

T-Rex fossil sells for record-breaking $31.8 mn

One of the most complete specimens of a T-Rex fossil in the world was sold for a record $31.8 million Tuesday by Christie's in New York, nearly quadrupling the previous highest price for a dinosaur at auction.

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Expert

An expert ( Audio (US) (help·info), also called cognoscente) is someone widely recognized as a reliable source of technique or skill whose faculty for judging or deciding rightly, justly, or wisely is accorded authority and status by their peers or the public in a specific well-distinguished domain. An expert, more generally, is a person with extensive knowledge or ability based on research, experience, or occupation and in a particular area of study. Experts are called in for advice on their respective subject, but they do not always agree on the particulars of a field of study. An expert can be, by virtue of credential, training, education, profession, publication or experience, believed to have special knowledge of a subject beyond that of the average person, sufficient that others may officially (and legally) rely upon the individual's opinion. Historically, an expert was referred to as a sage (Sophos). The individual was usually a profound thinker distinguished for wisdom and sound judgment.

Experts have a prolonged or intense experience through practice and education in a particular field. In specific fields, the definition of expert is well established by consensus and therefore it is not necessary for an individual to have a professional or academic qualification for them to be accepted as an expert. In this respect, a shepherd with 50 years of experience tending flocks would be widely recognized as having complete expertise in the use and training of sheep dogs and the care of sheep. Another example from computer science is that an expert system may be taught by a human and thereafter considered an expert, often outperforming human beings at particular tasks. In law, an expert witness must be recognized by argument and authority.

Research in this area attempts to understand the relation between expert knowledge and exceptional performance in terms of cognitive structures and processes. The fundamental research endeavor is to describe what it is that experts know and how they use their knowledge to achieve performance that most people assume requires extreme or extraordinary ability. Studies have investigated the factors that enable experts to be fast and accurate.

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