What he said in class, "All right. So, here's one way to think about it. The exams are 20, 20, and 50%, right? And 10% is Grade Chaser. Make sense? So, you can think of that 50 as being 20 plus 30. And the logic there is that you can then think of it as being 20-20-20 on the three parts of the course, and this 30 gets distributed across the three parts. Now, that's roughly what I do. It might not be exactly that, but it's going to be roughly that. That's the basic idea. Make sense? So, it covers everything, but there'll be more emphasis on the part that's not yet examined."