The Fibonacci sequence works like this:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 . . .

You add two numbers to get the next number in the sequence (as in 2+3=5), then you add that number to the previous number in the sequence to get the following one (3+5=8), and so on. Greg Ross at Futility Closet explains that this sequence lets you convert miles to kilometers, where 8 miles equals 13 kilometers, 13 miles equals 21 kilometers , etc. Greg explains that this works because "the two units stand in the golden ratio" -- approximately 1.6180339887. But the great thing about it is, even if you don't understand HOW it works, you can still use it. Like your computer or your car. And when I say you I mean me.

Oops - kilometers are shorter than miles. 21 kilometers = 13 miles.

-OO-

Posted by: Micronus | July 09, 2008 at 08:27 PM

isn't it the other way around?

Posted by: JBelle | July 09, 2008 at 08:28 PM

Oops indeed. I wrote that one too fast.

Posted by: gail | July 09, 2008 at 08:45 PM

I'll be damned....

Posted by: michael5000 | July 10, 2008 at 02:09 AM

Now all I have to do is remember the Fibonacci Sequence.. All these yeasr I've been wasting my time memorizing PI to the ten thousandth decimal place...

Posted by: Jake | July 10, 2008 at 06:11 AM

You don't have to memorize the Fibonacci sequence. All you have to do is add.

Posted by: gail | July 10, 2008 at 09:41 AM

However, you could memorize the golden ratio if you are so inclined.

Posted by: gail | July 10, 2008 at 09:42 AM

It's a heck of a lot easier just to do the math. One kilometer is .6 miles. You just multiply by six and move the decimal.

Say it's 8K. 8(6)=48. So 8K is 4.8 miles.

Posted by: CraigC | July 10, 2008 at 11:14 AM

Or the other way around, lol.

Posted by: CraigC | July 10, 2008 at 11:16 AM

Which is not quite as simple. It gives you a good approximation, though, if you can divide in your head and apply the remainder.

Posted by: CraigC | July 10, 2008 at 11:20 AM