Weapons of Math Destruction

by

Cathy O’Neil

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Big Data, or the so-called “Big Data economy,” is a field that seeks to analyze incredibly large data sets through models and algorithms—some of which O’Neil classifies as “weapons of math destruction” because of how harmful they can be on a societal level. More colloquially, the idea of “big data” refers to our modern era, in which data about us—where we live, what we shop for, how much money we make, and more—is, in turn, used to control important aspects of our lives. Big Data can impact how we’re targeted by advertisers and politicians; whether we can secure loans, credit, or insurance policies; and more.

Big Data Quotes in Weapons of Math Destruction

The Weapons of Math Destruction quotes below are all either spoken by Big Data or refer to Big Data. For each quote, you can also see the other terms and themes related to it (each theme is indicated by its own dot and icon, like this one:
Humanity vs. Technology  Theme Icon
).
Introduction Quotes

The math-powered applications powering the data economy were based on choices made by fallible human beings. Some of these choices were no doubt made with the best intentions. Nevertheless, many of these models encoded human prejudice, misunderstanding, and bias into the software systems that increasingly managed our lives. Like gods, these mathematical models were opaque, their workings invisible to all but the highest priests in their domain: mathematicians and computer scientists. Their verdicts, even when wrong or harmful, were beyond dispute or appeal. And they tended to punish the poor and the oppressed in our society, while making the rich richer.

Related Characters: Cathy O’Neil (speaker)
Related Symbols: Weapons of Math Destruction
Page Number: 3
Explanation and Analysis:
Chapter 6: Ineligible to Serve Quotes

The hiring business is automating, and many of the new programs include personality tests like the one Kyle Behm took. It is now a $500 million annual business and is growing by 10 to 15 percent a year […]. Such tests now are used on 60 to 70 percent of prospective workers in the United States […].

Naturally, these hiring programs can't incorporate information about how the candidate would actually perform at the company. That’s in the future, and therefore unknown. So like many other Big Data programs, they settle for proxies. And as we’ve seen, proxies are bound to be inexact and often unfair.

Related Characters: Cathy O’Neil (speaker), Kyle Behm
Related Symbols: Weapons of Math Destruction
Page Number: 108
Explanation and Analysis:

Phrenology was a model that relied on pseudoscientific nonsense to make authoritative pronouncements, and for decades it went untested. Big Data can fall into the same trap. Models like the ones that red-lighted Kyle Behm and blackballed foreign medical students at St. George’s can lock people out, even when the “science” inside them is little more than a bundle of untested assumptions.

Related Characters: Cathy O’Neil (speaker), Kyle Behm
Related Symbols: Weapons of Math Destruction
Page Number: 117
Explanation and Analysis:
Chapter 7: Sweating Bullets Quotes

With Big Data, […] businesses can now analyze customer traffic to calculate exactly how many employees they will need each hour of the day. The goal, of course, is to spend as little money as possible, which means keeping staffing at the bare minimum while making sure that reinforcements are on hand for the busy times.

Related Characters: Cathy O’Neil (speaker)
Related Symbols: Weapons of Math Destruction
Page Number: 124
Explanation and Analysis:

While its scores are meaningless, the impact of value-added modeling is pervasive and nefarious. “I’ve seen some great teachers convince themselves that they were mediocre at best based on those scores,” Clifford said. “It moved them away from the great lessons they used to teach, toward increasing test prep. To a young teacher, a poor value-added score is punishing, and a good one may lead to a false sense of accomplishment that has not been earned.”

Related Characters: Cathy O’Neil (speaker), Tim Clifford (speaker)
Related Symbols: Weapons of Math Destruction
Page Number: 139
Explanation and Analysis:
Conclusion Quotes

Big Data processes codify the past. They do not invent the future. Doing that requires moral imagination, and that's something only humans can provide. We have to explicitly embed better values into our algorithms, creating Big Data models that follow our ethical lead. Sometimes that will mean putting fairness ahead of profit.

Related Characters: Cathy O’Neil (speaker)
Related Symbols: Weapons of Math Destruction
Page Number: 204
Explanation and Analysis:
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Big Data Term Timeline in Weapons of Math Destruction

The timeline below shows where the term Big Data appears in Weapons of Math Destruction. The colored dots and icons indicate which themes are associated with that appearance.
Introduction
Humanity vs. Technology  Theme Icon
...human’s potential as “students, workers, lovers, criminals.” This, O’Neil writes, is now known as the Big Data economy. (full context)
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
But around 2010, as Big Data saw mathematics involving itself in human affairs like never before, O’Neil began to feel troubled.... (full context)
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
...announces her intent to take her readers on a tour of “the dark side of Big Data ” and examine the injustices that WMDs cause as they control most aspects of modern... (full context)
Chapter 2: Shell Shocked
Humanity vs. Technology  Theme Icon
Fairness vs. Efficiency  Theme Icon
...As she adjusted to her new job, she found lots of parallels between finance and Big Data —the biggest of which was that in both fields, money and self-worth were inextricably interwoven.... (full context)
Chapter 4: Propaganda Machine
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
...alleges that the internet isn’t the equalizing, democratizing force it promised to be. Instead, as Big Data and tech companies have learned more about individual users, they’ve created rankings and categorizations of... (full context)
Chapter 5: Civilian Casualties
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
...The software was called PredPol (short for “predictive policing”), and it was made by a Big Data start-up based in California. The software promised to use historical crime data to show, hour... (full context)
Chapter 6: Ineligible to Serve
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
...O’Neil asserts, are prone to confirmation biases rooted in “pseudoscientific nonsense.” In this way, modern-day Big Data is a lot like phrenology—the racist and long-debunked study of whether irregularities of the human... (full context)
Chapter 7: Sweating Bullets
Humanity vs. Technology  Theme Icon
Fairness vs. Efficiency  Theme Icon
Irregular schedules and clopenings are both products of the Big Data economy. WMDs that treat workers “like cogs in a machine” create these trends and entrench... (full context)
Chapter 8: Collateral Damage
Humanity vs. Technology  Theme Icon
Fairness vs. Efficiency  Theme Icon
...faulty algorithms. These automatic systems now need a human hand to sift through their mistakes. Big Data needs to slow down and allow humans to play a greater role in sorting sensitive... (full context)
Humanity vs. Technology  Theme Icon
Fairness vs. Efficiency  Theme Icon
...get, and what their interest rate will be. People are trading privacy for discounts—and if Big Data algorithms find something as minor as a spelling error in a mountain of data about... (full context)
Chapter 9: No Safe Zone
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
In the age of Big Data , insurers can judge us by how we drive in entirely new ways. In 2015,... (full context)
Chapter 10: The Targeted Citizen
Humanity vs. Technology  Theme Icon
Data, Transparency, and U.S. Democracy Theme Icon
Nowadays, Big Data has given politicians lots of powerful tools for targeting “micro-groups” of citizens for votes and... (full context)
Conclusion
Humanity vs. Technology  Theme Icon
Fairness vs. Efficiency  Theme Icon
Data, Transparency, and U.S. Democracy Theme Icon
...systems are stuck in time—engineers have to change them as society progresses. So essentially, “ Big Data processes codify the past” rather than inventing the future. Only humans have the “moral imagination”... (full context)
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
 But Big Data , O’Neil asserts, should be disruptive when it comes to things that actually matter, like... (full context)
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Data, Transparency, and U.S. Democracy Theme Icon
...of a “new revolution”—and learn to bring transparency, fairness, and accountability to the age of Big Data . (full context)
Afterword
Humanity vs. Technology  Theme Icon
Discrimination in Algorithms  Theme Icon
Fairness vs. Efficiency  Theme Icon
Data, Transparency, and U.S. Democracy Theme Icon
...things from different points of view—and even mathematical proofs can be full of mistakes. But Big Data has a duty to clarify the noise—not contribute to it even more. Big tech companies... (full context)