Because they make the rocks curl in alot of different ways to get it closer to the button. Most times you don't have a direct shot at the button, so
you need to curl it around the other stones to get it tight.
I would just like to thank my ISP for allowing me the opportunity to be here today. And the 3 amigos, without their hardwork and determination I
would not of had the chance to earn this... thiss.... this.. what?