The author of that LA times article is a well known hack and Palin apologist. A quick google search turns up multiple articles critical of him getting historical facts WRONG. Also, he didn't cite his references. I'm not taking his word for it that Palin got her facts straight and that she knew she was right when she first opened her mouth.
What about the other article that basically says the same thing? Let me guess, his cited sources aren't credible either...