`  :There are three, very solid, WP:MEDRS-acceptable references that say exactly that.  Wikipedia's standard for ``The Truth`` is the existence of solid references backing up any particular statement.  So, as far as this encyclopedia is concerned, it is a fact. There comes a point where we cannot hedge every statement with doubt and uncertainty - at some point, a statement reaches the Wikipedia standard - and we must state it clearly and unambiguously.  While there are a great number of people who doubt what this sentence says, there are also a great number of people who doubt that men landed on the moon or that the holocaust really happened.  But we simply cannot write for that tiny minority...this is a fact...and we must state it with as much authority as we do the moon landing.   `