"Unlike other sites on the web which erase older
versions as new information
is added, Wikipedia maintains an archive, for every single article, of edits
and changes and discussions, so that those who refer to Wikipedia can track
precisely how the prevailing view on any point has been produced."
-- David Morris
Deleted articles' histories and some edits are only visible to admins,
some only to oversighters, and some old edits are lost.
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User:Jeandré_du_Toit