Talk:Legend of Dragon Gods/@comment-116.87.76.236-20140420064909/@comment-15.195.201.88-20140421084003

I think this is a poor understanding of statistics, leading to a poor recommendation to use crystal to continue rather than to buy more MP.

You are not supposed to know which runs will have a successful drop, so your example is ill advised. Pick whatever option will give you more runs ; from a pure statistical perspective, the more runs for your crystals, the higher the chances of getting a drop, period.