林肯曾經有一句名言:你可以一時忽悠所有人,也可以永遠忽悠某些人,但不可能永遠忽悠所有人。You can fool all the people some of the time, and some of the people all the time, but you cannot fool all the people all the time.林肯的話實際上道出了輿論控制和宣傳洗腦的限度。