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An expert is someone widely recognized as a reliable source of knowledge, technique, or skill whose judgment is accorded authority and status by the public or their peers. Experts have prolonged or intense experience through practice and education in a particular field.

The opposite of an expert is generally known as a layperson, while someone who occupies a middle grade of understanding is generally known as a technician and often employed to assist experts. A person may well be an expert in one field and a layperson in many other fields. The concepts of experts and expertise are debated within the field of epistemology under the general heading of expert knowledge.

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.

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Able2Know - Ask an Expert - Ask an expert at this knowledge exchange where experts answer one's questions. Features discussions on diverse topics.
Meta Description: [ Ask an expert at this highly regarded knowledge exchange where experts answer your questions for free. It is also known to feature intelligent discussions about diverse topics. ]

AllExperts.com - Volunteer experts answer all your questions.
Meta Description: [ About AllExperts: expert guidance from real people helping to answer your questions ]

Ampleo - Offers emailed responses to inquiries compiled by researchers.
Meta Description: [ Ampleo.com is a human assisted search engine, our people search the internet for you and then email you the most accurate and relevant results within 24 hours, our search engine is always free to use, there are no memberships, no forms to fill and absolutely no obligations, just tell us what you ... ]

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Meta Description: [ A fun and useful web site whereby the user can ask questions and receive answers from chefs from around the world ]

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Meta Description: [ Become an expert or ask an advisor about ANY subject, such as financial advice or medical questions, at this question-and-answer community. ]

Ask The Inventors - Free help for first-time inventors about how to go from idea to patenting, marketing and licensing.

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