Carly Fiorina received a BA from Stanford in medieval history and philosophy almost 40 years ago, but she’s always ready to revisit her undergraduate glory days. Last Sunday, the Republican presidential candidate tried to burnish her national security credentials by claiming that her bachelor’s degree prepared her to fight Isis. She said: “Finally my degree in medieval history and philosophy has come in handy, because what Isis wants to do is drive us back to the Middle Ages, literally”.

I’d like to state unequivocally that my years of training to become a professor of medieval history in no way make me fit to be appointed commander-in-chief of the US military. While the Middle Ages do in fact shape contemporary events all the time, Fiorina unfortunately almost always gets the lessons of history wrong.

When we use the word “medieval” to characterize something we don’t like, be it Isis, the Ferguson Police department or Russia’s driver’s license regulations, we are trying to impose chronological distance between ourselves and things we find unpleasant. Thinking of these distasteful or evil aspects of the modern world as belonging to the past makes it harder, not easier, to understand their root causes and fight them.

That hasn’t stopped Fiorina from bringing up her medieval history training surprisingly often. It used to just be part of her “self-made” mythology: she graduated from Stanford with a degree that taught her how to think, but no specific skills, dropped out of law school, then clawed her way to the top.

The veracity of that story has been called into question, but she does make good points about the value of a humanities education, saying: “My medieval history and philosophy degree … did prepare me for life … I learned how to condense a whole lot of information down to the essence. That thought process has served me my whole life … I’m one of these people who believes we should be teaching people music, philosophy, history, art”. I wish more of her Republican colleagues would take these words to heart.

Lately, though, it’s all about scoring partisan points. She’s incorporated her quip about Isis driving us back to the Middle Ages as a standard part of her stump speech since at least last March. It’s a joke, perhaps, but given that her complete lack of national security credentials is a campaign issue, it’s not a throwaway line. She really does seem to be claiming that her undergraduate degree will enable her to make sound foreign policy decisions, despite her lack of experience.

Moreover, touting her “medieval” credentials is a way for her to play to culture warriors who believe that Christianity is under attack. President Obama made a remark about The Crusades at the National Prayer Breakfast in February, citing those medieval religious wars as one example of the ways that Christianity, like all other religions, had been used to justify violence. Fiorina pounced. As well as claiming expertise in how to fight Isis, she criticizes Obama as “historically inaccurate. It is true that Isis wants to plunge the world back into the middle ages,” she said. “It’s just that most of us moved on about 800 years ago, and we need to defeat that evil enemy.” Medieval history to the rescue.

As a medievalist, I believe that we need to study the past in order to respond to the present, but we must learn the right things. Isis is, undoubtedly, inspired by medieval and pre-medieval Islamic ideas about power, purity and what they believe to be the “true nature of Islam.” Medieval Islam, like all religions, contained many different types of ideas and practices. Some were comparatively tolerant and open to innovation and differences; others were more restrictive. I argue, as the president did in February, that you can look into the history of any religion and find examples of both the best and worst of humanity within it, then draw inspiration as you see fit.

It’s vital to recognize, though, as John Terry writes in Slate, that the viciousness of Isis emerges from its modernity, not its artificial links to the past. Terry writes: “Isis is not re-enacting the seventh-century Arab conquests, even though some among its ranks may think they are. They’re nostalgic for a make-believe past, and those among them who know plenty about Islam’s first decades have conveniently revised medieval history to fit modern ideological needs.”

Isis depends on modernity. Their growth was made possible by modern wars – from the division of the Middle East post-World War I to the most recent wars in Iraq and Syria. It’s only in this ultra-modern context that a group like Isis could grow and flourish. They expertly deploy modern technology to recruit and communicate. Some of their recruits even purchased Islam for Dummies before trying to head to the war zone. Now there’s an ultra-modern “fake it until you make it” mentality.

If Carly Fiorina really wants to draw on the Middle Ages for inspiration, I do have some suggestions. Lesson one: support universities, scholars, writers and artists, as their contributions outlive us all. Lesson two: peasants, oppressed for too long, always rebel. Lesson three: don’t go to war in the Middle East without a good exit plan.