A minimal and specialized ontology, i.e., a list of questions, answers to which describe what exists in the world. This includes only what is required for some narrow range of actions; e.g., a library card catalogue[?] schema asks librarians only to provide enough information about the book to help library users decide if they want to browse through it, and if so, how to find it. By contrast, an ontology enables a much broader range of actions, e.g., all of those normally associated with a working trade or profession.
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Quackery today
The most common products that are being sold, and are considered ineffective by experts are herbal medicines. These are ...