Divination

BY POOP
This is really simple.  Basically after you poop, you stand above it (don't wipe your ass, because then your vision is skewed from the material) and look at your poop and see if you can see anything more to it.  That's called divination by poop.

On the other hand, this guy defecates Gods, so therefore when you get one or two good names, it's so easy to know all about what something is.