I have to warn you- the second lecture is going to be molecules, molecules, molecules. It's going to be like an interstate intersection- the spaghetti-like intersections. And that's probably how your head is going to feel. You can kick and scream, and sometimes that helps. You can whine- I respond very well to whining, because I'm a mother. Sometimes a lot of crying is the background in my house- and sometimes I respond to that.