"Before serving on the Enterprise, D.O. served on the Daedalus class starships Essex and Archon." How is this possible? The Daedalus class came long after NX-01's first mission. Help? – AT2Howell 22:52, 14 September 2008 (UTC)

Try reading the Daedalus-class page, Last Full Measure established the class in service before the NX-class. --8of5 23:09, 14 September 2008 (UTC)