User blog comment:BonesMcGee/Brainstorm: Potential savings in using the hurry hatch trick/@comment-5445410-20120924163651/@comment-5243843-20120925090358

Same here,

I have been trying since they released Mesohippus. And I have had 6 tigers since then and no Mesohippus or Oviraptor although you have the same chance to get them. (Probability Value 1). How do they come up with these figures anyway?