Comment Re:Can the Public Become Private? (Score 1) 71
You can't unsay what you have said. If you scream at someone "I'm gonna kill you", it will be used against you.
It is doubtful that that phrase, without context, will be used against you. Words on their own have no standing without context. Now, if you pull a knife, wave it menacingly at an individual and scream "I'm going to kill you!", now you are talking about something that will get you in trouble. People scream, whisper, shout, say and text 'I'm going to kill you' all day every day with no repercussion and there shouldn't be any repercussion, because that phrase is a well known idiom.
While it is true that you can't pull words back from the past, you can, figuratively, unsay most comments. How successful the unsaying is debatable and dependent upon the comment, to whom it was said and in what context you made the comment you wish to retract.