With a news cylce measured in seconds and minutes, not even hours, there are plenty of mainstream media mistakes, as I wrote yesterday,
One lesson for mass killings: Don’t trust media reports for at least 24 hours.
Piers Morgan, for example, ran wild over the fact that the shooter used an AR-15, except it turned out the shooter didn't.
So Morgan deleted some of his inaccurate and embarrassing tweets about the use of an AR-15 in the Navy Yard shooting. In so doing, Morgan both deleted inaccurate information and his own political embarrassment.
That makes it harder for people (like me) to address Morgan's politics on gun control -- evidence has been removed from the internet. Well, fortunately,
Twitchy grabbed the screen shots before Morgan's deletion:
But in many cases, someone's Twitter or blog history is important in itself.
With a blog entry, one can update and correct, as
Buzzfeed did yesterday, and Google Cache often (but not always) saves the original. But with Twitter, there is no ability to change the tweet itself, only to issue a new tweet correcting the prior (Morgan has not done that, btw), and it is much harder to reconstruct deleted tweets.
The same issue exists as to the NY Daily News' now infamous Cover which was sent out on Twitter, and resulted in this conversation:
https://twitter.com/brithume/status/380086436835241984
https://twitter.com/LegInsurrection/status/380312186456793088