Weapons of Math Destruction: How Big Data Increases Inequality and Threatens Democracy by Cathy ONeilA former Wall Street quant sounds an alarm on mathematical modeling—a pervasive new force in society that threatens to undermine democracy and widen inequality.
We live in the age of the algorithm. Increasingly, the decisions that affect our lives—where we go to school, whether we get a car loan, how much we pay for health insurance—are being made not by humans, but by mathematical models. In theory, this should lead to greater fairness: Everyone is judged according to the same rules, and bias is eliminated. But as Cathy O’Neil reveals in this shocking book, the opposite is true. The models being used today are opaque, unregulated, and uncontestable, even when they’re wrong. Most troubling, they reinforce discrimination: If a poor student can’t get a loan because a lending model deems him too risky (by virtue of his race or neighborhood), he’s then cut off from the kind of education that could pull him out of poverty, and a vicious spiral ensues. Models are propping up the lucky and punishing the downtrodden, creating a “toxic cocktail for democracy.” Welcome to the dark side of Big Data.
Tracing the arc of a person’s life, from college to retirement, O’Neil exposes the black box models that shape our future, both as individuals and as a society. Models that score teachers and students, sort resumes, grant (or deny) loans, evaluate workers, target voters, set parole, and monitor our health—all have pernicious feedback loops. They don’t simply describe reality, as proponents claim, they change reality, by expanding or limiting the opportunities people have. O’Neil calls on modelers to take more responsibility for how their algorithms are being used. But in the end, it’s up to us to become more savvy about the models that govern our lives. This important book empowers us to ask the tough questions, uncover the truth, and demand change.
The video shows how to calculate weight if the mass is given and vice versa. Later on in this unit you will learn about Newton's laws of motion and Newton's second law of motion gives us a way to change mass into weight and vice versa. This law will tell you what is happening to objects when the net force on the object is not equal to zero and the easy way to say what will happen is that the object will accelerate. But how much the object accelerates depends on two things,firstly the mass of the object how heavy the object is and secondly force how much you push or pull it. From this simple idea we can say. Or in other words acceleration is directly proportional to the force in which you push or pull and inversely proportional to the mass. So the larger the object mass the smaller the acceleration.
We measure mass by weighing , but Weight and Mass are not really the same thing. Hold one small paperclip in your hand. Does that weigh a lot? A gram is very light. That is why you often see things measured in hundreds of grams. Grams are often written as g for short , so " g" means " grams".
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Mathematics - Learn about the Mass of Objects
Save my name, email, and website in this browser for the next time I comment. Which factor affects the speed of an inkjet printer? We offer an algebra calculator to solve your algebra problems step by step, as well as lessons and practice to help you master algebra. A: A coefficient is the number in front of any term containing a variable or variables. Daily Math Warm-Ups includes many elements that will help students master a wide range of mathematical concepts.