I've just started collecting dice in the last couple weeks. I don't play craps, and don't know much about dice, other than they seem like a fun thing to collect. I've noticed people on ebay selling sticks of 5 dice. The question that's been bothering me is, if you only use 2 at a time, why are there 5 in a stick? Like I said, it's probably a stupid question, but I'm sure someone here can set me straight.