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The major points of criticism of Wikipedia , an online encyclopedia , are the claims that the principle of being open for editing by everyone makes Wikipedia unauthoritative and unreliable (see Reliability of Wikipedia ), that it exhibits systemic bias , and that its group dynamics hinder its goals. The Seigenthaler and Essjay incidents caused criticism of Wikipedia's reliability and usefulness as a reference. [ 1 ] [ 2 ]
The statistics we maintain within the Wikimedia movement broadly fall into two categories.
Tools are used by some animals, particularly primates, to perform simple tasks such as getting food or grooming. Originally thought to be a skill only possessed by humans, tool use requires some level of intelligence. Primates have been observed exploiting sticks and stones to accomplish tasks. Numerous bird species have also been noted as capable of using tools.