I have way too many questions. Which MIT student was so sloshed in beer that one night (s)he came up with this brilliant idea – I am going to feed the mouse some yogurt and then see what it does to the size of its testicles? Why yogurt? Why, of all body parts, the testicles? And how do you even measure them with so much precision that you can say they have grown? Are we done with solving all the other problems?