So when something inaccurate is said on television, it’s much harder to correct. Any on-air correction that isn’t a flash in the lower third eats up programming time. In part, that’s because you have to give the context for what it is that you’re correcting, since it’s not accompanying the original story. (This is a challenge for corrections in the print newspaper, too, although there we have more space to play with.) And, then, that explanation on TV takes longer than a written one because speaking is slower than reading. That’s a lot of disincentive for on-air corrections — and certainly one reason we so infrequently see them.