Google Research

Lots of folks have been all agog at the new Google Ngam Viewer, which searches Google books for words or phrases and then graphs their occurrence.  Here is an image of one such for hitler:

Here's another for Hitler:

Here's another on terrorism versus Terrorism

 In any event, the next time you see some clever Charlies making some kind of argument based on Ngram evidence treat it with all the respect it deserves. Really researching any topic of interest, as opposed to the intellectual sloth that is the Google, is a lot of work.  Something like this might serve as the first step in a long term study but it would have to e a tentative and halting first step.