I don't know. It does other things too, sometimes. It gives people animals or specific items from home and stuff. It's hard to know how it decides anything. The Sphere has only spoken directly to us three times in the year and a half that I've been here. Once after it had been affected by some moss that had infected it, once when it was testing us to see if we would chose to put ourselves before the others here and once explaining to us what was going on here.

And don't worry, I really don't want to be able to look into someone else's head.