A distraction..

Got this via email today.  The instructions said:

Procedure of  Flash Fabrica Game: 
1. Touch 'start'
2. Wait for the countdown to finish, i.e., 3...2...1
3. Memorize the number's position on the screen and their numerical order, then click the circle from the smallest number to the biggest number.  This sequence will repeat ~ 10 times until the game ends.
4. At the end of game, the computer will tell you how old your brain is in years.

http://flashfabrica.com/f_learning/brain/brain.html

If the English sounds awkward, it's because the site is in Japanese. I don't know what science this test relies on for accuracy, but it's only a minute or so.

And what I want to know is... does a lower number mean your brain is nimble or that you're just immature (or have bad eyesight and hand/eye coordination)?