How Math Can Save Your Life - James D. Stein

 

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We can get a good idea of how education has changed in the United States by taking a look inside a little red schoolhouse in the heartland of America a little more than a century ago.

What constitutes value? On a philosophical level, I’m not sure; what’s valuable for one person may not be for others. The most philosophically valuable thing
I’ve ever learned is that bad times are always followed by good times and vice versa, but that may simply be a lesson specific to yours truly. On the other hand, if this lesson helps you, that’s value added to this chapter. And if this chapter
helps you financially, even better—because there is one universal common denominator of value that everyone accepts:money.

That’s why this chapter is valuable, because I’m going to discuss a few basic concepts that will be worth tens of thousands—maybe even hundreds of thousands—of dollars to you. So let’s get started.

A penny saved is still a penny earned, but nowadays you can’t even slip a penny into a parking meter—so let me make this book a worthwhile investment by saving you a few thousand dollars. The next time you go to buy an appliance and the salesperson offers you a service contract, don’t even consider purchasing it. A simple table and a little sixth-grade math should convince you.