I love the comment that ends this video: 'In three years of arguing with conspiracy theorists, I've never once won an argument with them.'

I also very much appreciate the data about the use of the terms 'conspiracy theory' and 'conspiracy theorist': Used by the Washington Post and New York Times a total of 50 times in the 45 years prior to a 1967 CIA memo that used the former term in reference to skepticism over the Warren Report; and 2,630 times in the (almost) 45 years after that. Coincidence? (Actually, I'm surprised the latter figure isn't a lot higher.)

However, before passing this information along to others, I think it's important to know the source of this data. I didn't notice a source mentioned in the video. Could you please fill me in on this?