3 ms·

I also think the site doesn't explain very well the idea. Take a look to this video: http://www.youtube.com/watch?v=KRvbFpeZ11Y http://www.youtube.com/watch?v=K

by base 14y ago

I also think the site doesn't explain very well the idea. Take a look to this video: http://www.youtube.com/watch?v=KRvbFpeZ11Y http://www.youtube.com/watch?v=KRvbFpeZ11Y should be easier to understand.