Browsing All posts tagged under »world«

Zero, One, and Infinity

August 15, 2010

16

The concept of infinity is useful in mathematics, but doesn’t have many practical applications in everyday life. In fact, it tends to cause problems. For example, if you had an infinite number of ping pong balls, each with a different numeral, and you gave away all of the even-numbered balls, you’d still have an infinite […]

A Lot of Big Issues. One Tiny Mind.

August 11, 2010

18

There are major problems in the world. I don’t have to tell you, because you watch the news, or at least hear snatches of it even while you’re trying not to listen. War, famine, disease, oil spills. Like you, I often wish I could do something to alleviate the suffering. There was a time when […]

Maybe It’s Mars That’s Shrinking?

June 19, 2010

11

They say the world’s getting smaller. They’ve been saying it for years, but I don’t know. We flew from Rome to New York a few months ago and it took twelve hours. I’ve taken that trip before and don’t remember the flight being that long. I think maybe the world’s getting bigger. I’ll tell you […]

The Long Hall

500 Key Words for the SAT

Writing Rules!

100 Math Tips for the SAT

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