To Jan:
Perhaps you do not understand exactly what is a lie.
From http://www.m-w.com/home.htm :
Main Entry: 3lie
Function: verb
Inflected Form(s): lied; ly·ing /'lI-i[ng]/
Etymology: Middle English, from Old English lEogan; akin to Old High German liogan to lie, Old Church Slavonic lugati
Date: before 12th century
intransitive senses
1 : to make an untrue statement with intent to deceive
2 : to create a false or misleading impression
transitive senses : to bring about by telling lies <lied his way out of trouble>
Please note the word "intent" in the first definition. When Kruschev said, "We will bury you!" was he lying? NO! He was mistaken, and his statement was untrue, but he believed it to be true and he had no intent to deceive. If you asked one of your day care children, "What's two and two?" and she replied, "Three," was she lying? Of course not. She was mistaken, but was not trying to deceive you. The intent is what makes the lie, not the incorrectness of the statement. So you cannot justify calling everyone who makes an incorrect statement a liar.
To "prove the lie with their own words," as you like to say, you have to prove two things...that their words were incorrect, AND that they were said with the intent to deceive. I have never seen you successfully do, or even attempt, either.
You throw the words "lie" and "liar" around wily-nily as if you have a franchise on their definition. You do not.
You are quite rude, Madam, an I shall continue to call you on it every time you spit your venom into this venue.
--Rich