3D Head

I know that we are only focusing on human bodies right now but looking into videos on how to model faces scares me (but that is nothing new!) The editor is obviously very advanced to model a face in 8 minutes. I agree with Connie; I am not a physicist and I don't see how he knows how to make the points for the creases in the face. I can see how he outlines the face to the picture he has but I am not sure how he knows how points in the face connect together. I know that the face is very complicated and that tomorrow as we construct humans in Maya it will be an easier task than this.