Human beings have long been afraid of the "other." But is this fear ingrained in our psyche, or a product of our surroundings? And where does the word even come from? To answer, on the show this week is historian and psychiatrist George Makari. Check out his book Of Fear and Strangers: A History of Xenophobia, at http://factuallypod.com/booksLearn more about your ad choices. Visit megaphone.fm/adchoices

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