Mark, dhett, Bobross, you all are right. But the things you mention require one or more of the following:
A. time to correct the mistake
B. people who know the difference
C. people who give a ------
D. people who are B. or C. watching the on-air product
While these are things that you might depend on at a REAL news operation, they are few and far between here, and you definitely cannot depend on them, or assume that the people whose job it is to do these things will do them. Quite pathetic, actually.
EDIT: While I'm at it, I might as well take the leap and ask "Well, why are these incompetent fools running the operation?" And the obvious answer is that the good ones cost more. They don't all cost outrageous sums. They cost what they're worth. At some point you gotta make the decision...how committed are you to product quality vs costs.