Why Oh Why Can't We Have a Better Press Corps? (Yet Another New York Times Edition)

The mind boggles:

The Quiet Man - New York Times: The Op-Ed page in some copies of Wednesday's newspaper carried an incorrect version of the below article about military recruitment. The article also briefly appeared on NYTimes.com before it was removed. The writer, an Army reserve officer, did not say, "Imagine my surprise the other day when I received orders to report to Fort Campbell, Ky., next Sunday," nor did he characterize his recent call-up to active duty as the precursor to a "surprise tour of Iraq." That language was added by an editor and was to have been removed before the article was published. Because of a production error, it was not. The Times regrets the error. A corrected version of the article appears below.

In what kind of circus is an "error" like this even possible?