<Table> <Tr> <Td> </Td> <Td> This page in a nutshell: Do not use a Wikipedia article as a source for another Wikipedia article, even when describing Wikipedia . </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This page in a nutshell: Do not use a Wikipedia article as a source for another Wikipedia article, even when describing Wikipedia . </Td> </Tr> <P> Wikipedia is not a reliable source . Wikipedia can be edited by anyone at any time . This means that any information it contains at any particular time could be vandalism . Biographies of living persons are especially vulnerable to this issue . Some edits on Wikipedia that are in error are sometimes fixed, however because Wikipedia cannot monitor contributions made by millions of users, there are many errors that remain unnoticed for days, weeks, months, and even years . Therefore, Wikipedia should not be considered a source for' fact - checking' . </P> <P> The same applies to Wikipedia's sister projects, as well as websites that mirror or use it, and printed books or other material derived from Wikipedia . </P>

Reasons why wikipedia is not a good source
find me the text answering this question